 Early Iowa Inventors (1867-2007) 
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| 243751 | Althouse | David | Farragut | windmill | 7 | 5 | 1881 | |
| 294716 | Amis | Wilbourn | Davis | Farragut | wire stretcher | 3 | 4 | 1884 |
| 135510 | Beach | William | H. | Hamburg | means for operating earth auger | 2 | 4 | 1873 |
| 135509 | Beach | William | H. | Hamburg | earth auger | 2 | 4 | 1873 |
| 158016 | Beach | William | H. | Hamburg | hoisting apparatus for earth augers | 12 | 22 | 1874 |
| 147323 | Beach | William | H. | Hamburg | reamer for wells | 2 | 10 | 1874 |
| 130477 | Beach | James | P. | Hamburgh | churn | 8 | 13 | 1872 |
| 339730 | Beckwith | Benjamin | F. | Plum Hollow | anti-freezing box for turbine shafts | 4 | 13 | 1886 |
| 339730 | Beckwith | James | B. | Plum Hollow | anti-freezing box for turbine shafts | 4 | 13 | 1886 |
| 130618 | Bliss | Hosea | D. | Hamburgh | band sawing machine | 8 | 20 | 1872 |
| 3773288 | Bolton | Charles | D. | Sidney | purse hanger | 11 | 20 | 1973 |
| 3648425 | Bolton | Charles | D. | Sidney | adjustable bridging device | 3 | 14 | 1972 |
| 287903 | Brannian | James | T. | Randolph | combined hay rake and loader | 11 | 6 | 1883 |
| 2187675 | Bright | Jesse | L. | Riverton | wheeled garden implement | 1 | 16 | 1940 |
| 1254975 | Brown | Ray | R. | Hamburg | valve cap | 1 | 29 | 1918 |
| 339730 | Burson | Joseph | Plum Hollow | anti-freezing box for turbine shafts | 4 | 13 | 1886 | |
| 423126 | Carman | Charles | W. | Hamburg | bridge flooring | 3 | 11 | 1890 |
| 90993 | Carman | Charles | F. | Hamburgh | carriage wheel | 6 | 8 | 1869 |
| 1842713 | Case | Roscoe | Hamburg | attachment for agricultural machines | 1 | 26 | 1932 | |
| 605160 | Chambers | Lansford | Bartlett | combined dirt roller and pulverizer | 6 | 7 | 1898 | |
| 2456917 | Cheek | Alvah | R. | Thurman | engine head lifting tool | 12 | 21 | 1948 |
| 158032 | Christian | J. | B. | Hamburg | earth augers | 12 | 22 | 1874 |
| 292283 | Christian | John | B. | Hamburg | tongueless cultivator | 1 | 22 | 1884 |
| 284379 | Christian | John | B. | Hamburg | cultivator | 9 | 4 | 1883 |
| 138788 | Christian | John | B. | Hamburg | means for operating earth auger | 5 | 13 | 1873 |
| 284380 | Christian | John | B. | Hamburg | cultivator | 9 | 4 | 1883 |
| 260164 | Christian | John | B. | Hamburg | sulky cultivator | 6 | 27 | 1882 |
| 131427 | Christian | John | B. | Hamburg | well auger | 9 | 17 | 1872 |
| 130477 | Christian | John | B. | Hamburgh | churn | 8 | 13 | 1872 |
| 178412 | Christian | John | B. | Hamburgh | sad iron heater | 6 | 6 | 1876 |
| 1970546 | Clapper | Bryan | J. | Tabor | nozzle | 8 | 21 | 1934 |
| 833731 | Clare | John | Imogene | cultivator | 10 | 23 | 1906 | |
| 408694 | Clare | John | Imogene | cultivator | 8 | 13 | 1889 | |
| 2189706 | Clipston | Frank | J. | Farragut | automatic side hill equalizer attachment for grian combines | 2 | 6 | 1940 |
| 117986 | Copson | Robert | E. | Hamburgh | broom | 8 | 15 | 1871 |
| 1191569 | Corbit | Wardner | N. | Farragut | end gate for wagons | 7 | 18 | 1916 |
| 1029595 | Corbit | Wardner | N. | Farragut | wireless check rower | 6 | 18 | 1912 |
| 156545 | Davis | S. | B. | Hamburg | corn planters | 11 | 3 | 1874 |
| 147108 | Davis | Samuel | B. | Hamburg | corn planter | 2 | 3 | 1874 |
| 214372 | Davis | Samuel | B. | Hamburg | rotary engine | 4 | 15 | 1879 |
| 203122 | Davis | Samuel | B. | Hamburg | seed planter | 4 | 30 | 1878 |
| 136220 | Dawdy | Lansing | J. | Hamburgh | hand cultivator | 2 | 25 | 1873 |
| 133212 | Depeny | Abraham | B. | Hamburgh | harrow | 11 | 19 | 1872 |
| 2620955 | Elder | Morris | D. | Payne | boat handle | 12 | 9 | 1952 |
| 181563 | Engle | John | H. | Hamburgh | corn planter | 8 | 29 | 1876 |
| 1760940 | English | Stephen | C. | Hamburg | cultivator attachment | 6 | 3 | 1930 |
| 1215513 | Fichter | Paul | Randolph | clutch | 2 | 13 | 1917 | |
| 1761983 | Finnell | Simpson | Hamburg | cornstalk cutter | 6 | 3 | 1930 | |
| 2741514 | Fisher | Glenn | E. | Hamburg | ceiling board jack | 4 | 10 | 1956 |
| 1427199 | Foote | Isaac | O. | Sidney | lotion | 8 | 29 | 1922 |
| 1782063 | Gibson | Carter | C. | Hamburg | grinding apparatus | 11 | 18 | 1930 |
| 1856808 | Gibson | Carson | C. | Hamburg | grinding machine | 5 | 3 | 1932 |
| 129127 | Gould | Charles | W. | Hamburgh | washing machine | 7 | 16 | 1872 |
| 2434124 | Greedy | Edwin | F. | Anderson | corn harvester | 1 | 6 | 1948 |
| 2571865 | Greedy | Edwin | F. | Anderson | corn picker with cutter | 10 | 16 | 1951 |
| 186831 | Gregg | John | Riverton | pile driver | 1 | 30 | 1877 | |
| 6601891 | Gregory | Warren | D. | Sidney | grapple attachment | 8 | 5 | 2003 |
| 178765 | Hamilton | William | E. | Plum Hallow | bee feeder | 6 | 13 | 1876 |
| 178765 | Hamilton | William | E. | Plum Hollow | bee feeder | 6 | 13 | 1876 |
| 1069547 | Hanson | Soren | F. | Sidney | mixing machine | 8 | 5 | 1913 |
| 135509 | Hanson | Chancey | N. | Hamburg | earth auger | 2 | 4 | 1873 |
| 135510 | Hanson | Chancey | N. | Hamburg | means for operating earth auger | 2 | 4 | 1873 |
| 147323 | Hanson | Chancy | Hamburg | reamer for wells | 2 | 10 | 1874 | |
| 292283 | Hanson | William | D. | Hamburg | tongueless cultivator | 1 | 22 | 1884 |
| 634558 | Harless | Charles | R. | Tabor | spring trip for cultivators | 10 | 10 | 1899 |
| 156567 | Hatten | Charles | S. | Sidney | churns | 11 | 3 | 1874 |
| 2125563 | Hays | Benjiman | Franklin | Hamburg | burial vault | 8 | 2 | 1938 |
| RE7944 | Heaton | Henry | L. | Sidney | cultivator | 11 | 13 | 1877 |
| 144096 | Hiatt | Nicholas | Plum Hollow | harness trace eyelet | 10 | 28 | 1873 | |
| 177836 | Hiatt | Nicholas | Plum Hollow | neck yoke | 5 | 23 | 1876 | |
| 106695 | Hiatt | Nicholas | Sidney | churn | 8 | 23 | 1870 | |
| 1638852 | Hilger | William | B. | Riverton | cylinder for gasoline engines | 8 | 16 | 1927 |
| 1873763 | Hilton | Calvin | E. | Hamburg | sanitary pivoted roost structure | 8 | 23 | 1932 |
| 106695 | Hindman | Franklin | Marion | Sidney | churn | 8 | 23 | 1870 |
| 1025979 | Hinze | William | E. | Hamburg | wagon end gate | 5 | 14 | 1912 |
| 4168815 | Hodde | Raymond | L. | Hamburg | kite launching and stabilizing apparatus | 9 | 25 | 1979 |
| 5692978 | Hummel | Larry | Sidney | volleyball block back device | 12 | 2 | 1997 | |
| 6171205 | Hummel | Larry | Sidney | volleyball training device | 1 | 9 | 2001 | |
| 909902 | Hunter | John | W. | Tabor | hair dressing device | 1 | 19 | 1909 |
| 570553 | Hunter | John | W. | Tabor | portable weighing scale | 11 | 3 | 1896 |
| 1568335 | Husband | Ottie | L. | Thurman | mold for the manufacture of cement blocks | 1 | 5 | 1926 |
| 3871368 | Johnson | Thomas | P. | Sidney | deivce for fixation of preparturient vaginal prolapse | 3 | 18 | 1975 |
| 6135871 | Jones | Arthur | Tabor | pneumatic animal stunner | 10 | 24 | 2000 | |
| 232976 | Jordan | David | C. | Plum Hallow | clothes pounder | 10 | 5 | 1880 |
| RE12633 | Kearney | James | A. | Imogene | tongue regulator | 4 | 16 | 1907 |
| 825602 | Kearney | James | A. | Imogene | tongue regulator | 7 | 10 | 1906 |
| 135129 | King | John | A. | Hamburgh | well boring machine | 1 | 21 | 1873 |
| 132470 | King | John | A. | Hamburgh | washing machine | 10 | 22 | 1872 |
| 1323989 | Kline | Jacob | B. | Thurman | dish washing machine | 12 | 2 | 1919 |
| 1054564 | Kline | Jacob | B. | Thurman | animal trap | 2 | 25 | 1913 |
| 1194032 | Kline | Jacob | B. | Thurman | scoop end gate | 8 | 8 | 1916 |
| 1059474 | Laird | Roy | C. | Tabor | phonograph attachment for clocks | 4 | 22 | 1913 |
| 244264 | Leacox | Thomas | T. | Imogene | gearing | 7 | 12 | 1881 |
| 1384472 | Leahy | William | A. | Imogene | valve spring holder | 7 | 12 | 1921 |
| 167344 | Leeka | David | W. | Plum Hollow | tug slide | 8 | 31 | 1875 |
| 582653 | Leggett | Leroy | Sidney | cistern or well cleaner | 5 | 18 | 1897 | |
| 794806 | Leggett | Leroy | Sidney | cistern or well cleaner | 7 | 18 | 1905 | |
| 612852 | Leggett | Leroy | Sidney | fruit picker | 10 | 25 | 1898 | |
| 3299569 | Lemrick | Barton | P. | Percival | tomato plant housing support | 1 | 24 | 1967 |
| 1422871 | Lieser | Leo | F. | Sidney | attachment for carburetors | 7 | 18 | 1922 |
| 514943 | Liston | Alfred | Imogene | corn planter | 2 | 20 | 1894 | |
| 317392 | Lomax | Rush | R. | Plum Hollow | attachment for cultivators | 5 | 5 | 1885 |
| 2290835 | Lorimer | John | Imogene | tractor power take-off | 7 | 21 | 1942 | |
| 1895384 | Lorimor | John | Imogene | automobile gear pin | 1 | 24 | 1933 | |
| 2235457 | Lorimor | John | Imogene | driving axle and wheel hub assembly | 3 | 18 | 1941 | |
| 61077 | Lowrey | Robert | O. | Tabor | windmill | 1 | 8 | 1867 |
| RE2591 | Lowrey | Robert | O. | Tabor | improvement in tiles and bricks for roofing and other purposes | 5 | 7 | 1867 |
| 61746 | Lowrey | Robert | O. | Tabor | tile and brick | 2 | 5 | 1867 |
| 1245359 | Lucas | Earl | Anderson | flue stop | 11 | 6 | 1917 | |
| 1353923 | Lucas | Earl | S. | Randolph | motor driven tractor cultivator | 9 | 28 | 1920 |
| 1353924 | Lucas | Earl | S. | Randolph | cultivator | 9 | 28 | 1920 |
| 561598 | Lybe | Daniel | I. | Sidney | tire tightener | 6 | 9 | 1896 |
| 524065 | Lybe | Daniel | L. | Sidney | journal bearing | 8 | 7 | 1894 |
| 466893 | Lybe | Daniel | I. | Sidney | velocipede | 1 | 12 | 1892 |
| 1529840 | Magel | Henry | S. | Sidney | folding tub rack | 3 | 17 | 1925 |
| 1264539 | Magel | Henry | S. | Sidney | degluttitory cup | 4 | 30 | 1918 |
| 211414 | Manrose | David | P. | Riverton | pump | 1 | 14 | 1879 |
| 227439 | Manrose | David | P. | Riverton | pump | 5 | 11 | 1880 |
| 717441 | McDaniel | Lewis | Tabor | explosive | 12 | 30 | 1902 | |
| 1362766 | McGargill | James | M. | Imogene | gas mask | 12 | 21 | 1920 |
| 195298 | McLeran | Alvord | M. | Tabor | apparatus for unloading and elevating grain, bricks, & c. from wagons | 9 | 18 | 1877 |
| 405583 | Means | William | H. | Riverton | wagon brake | 6 | 18 | 1889 |
| 418736 | Means | William | H. | Riverton | door opening device | 1 | 7 | 1890 |
| 3145394 | Melton | Gladys | A. | Hamburg | invalid diaper | 8 | 25 | 1964 |
| 907839 | Mendenhall | Sarah | A. | Hamburg | douche chair | 12 | 29 | 1908 |
| 1059474 | Miller | Charles | E. | Tabor | phonograph attachment for clocks | 4 | 22 | 1913 |
| 408499 | Miller | Joseph | F. | Hamburg | reel carriage | 8 | 6 | 1889 |
| 1731256 | Mills | Edgar | O. | Hamburg | heating plant | 10 | 15 | 1929 |
| 1060479 | Mincer | Charles | E. | Hamburg | mixing tank | 4 | 29 | 1913 |
| 609112 | Moore | Llewellyn | C. | Farragut | shoe lace fastener | 8 | 16 | 1898 |
| 122973 | Mott | Gilbert | Tabor | gate | 1 | 23 | 1872 | |
| 913669 | Munsell | Charles | G. | Sidney | burglar alarm | 2 | 23 | 1909 |
| 193999 | Nichaolds | Locratus | C. | Hamburg | harrow and cultivator | 8 | 7 | 1877 |
| 466893 | Nickles | William | O. | Sidney | velocipede | 1 | 12 | 1892 |
| 164891 | Oak | Elexander | Hamburgh | brake block for wagons | 6 | 22 | 1875 | |
| 870580 | Orr | Francis | L. | Thurman | engine starter | 11 | 12 | 1907 |
| 715131 | Orr | Francis | L. | Thurman | pumping engine | 12 | 2 | 1902 |
| 905745 | Orr | Francis | L. | Thurman | valve | 12 | 1 | 1908 |
| 876832 | Orr | Francis | L. | Thurman | gas engine cooler | 1 | 14 | 1908 |
| 750115 | Orr | Francis | L. | Thurman | automatic electric pump | 1 | 19 | 1904 |
| 809211 | Orr | Francis | L. | Thurman | starting means for gas or similar engines | 1 | 2 | 1906 |
| 830921 | Orr | Francis | L. | Thurman | means for transmitting electrical impulses | 9 | 11 | 1906 |
| 837953 | Orr | Francis | L. | Thurman | engine starter | 12 | 11 | 1906 |
| 3083591 | Orton | John | W. | Sidney | vise held chain saw sharpener | 4 | 2 | 1963 |
| 2253591 | Otte | Brooks | A. | Sidney | pulley | 8 | 26 | 1941 |
| 592164 | Paddock | Truman | M. | Percival | machine for topping sorghum | 10 | 19 | 1897 |
| 819586 | Paddock | Ira | J. | Percival | motor | 5 | 1 | 1906 |
| 132008 | Patton | Remembrance | L. | Hamburgh | weather strip | 10 | 8 | 1872 |
| 132597 | Patton | Remembrance | L. | Hamburgh | switch locking device | 10 | 29 | 1872 |
| 208843 | Pearse | Marcus | C. | Tabor | corn husking implement | 10 | 8 | 1878 |
| 1604306 | Porterfield | John | F. | Hamburg | tire removing tool | 10 | 26 | 1926 |
| 1369837 | Price | Eri | M. | Percival | roofing bracket | 3 | 1 | 1921 |
| 1384212 | Price | Eri | M. | Percival | tail end gate for wagons | 7 | 12 | 1921 |
| 646761 | Priest | Almira | J. | Imogene | yeast and making same | 4 | 3 | 1900 |
| 183592 | Prott | Amos | Percival | weather strip | 10 | 24 | 1876 | |
| 608222 | Reed | Lincoln | Tabor | operating mechanism for churns | 8 | 2 | 1898 | |
| 2438681 | Reese | Jay | R. | Hamburg | knife sharpener | 3 | 30 | 1948 |
| 210268 | Replogle | Jacob | M. | Farragut | mill spindle | 11 | 26 | 1878 |
| 271270 | Replogle | Jacob | M. | Farragut | bail and driver for millstones | 1 | 30 | 1883 |
| 192553 | Rhode | John | Tabor | grasshopper catcher | 6 | 26 | 1877 | |
| 2610996 | Rickabaugh | William | P. | Tabor | electrical terminal block | 9 | 16 | 1952 |
| 166939 | Rider | William | H. | Plum Hollow | corn marker | 8 | 24 | 1875 |
| 846347 | Riedy | Joseph | F. | Hamburg | display stand | 3 | 5 | 1907 |
| 968983 | Riedy | Joseph | F. | Hamburg | rain water filter | 8 | 30 | 1910 |
| 778335 | Riedy | Joseph | F. | Hamburg | display stand | 12 | 27 | 1904 |
| 909336 | Riedy | Joseph | F. | Hamburg | display rack | 1 | 12 | 1909 |
| 1512055 | Rosenthal | Ernest | Hamburg | seed potato cutter | 10 | 21 | 1924 | |
| 612275 | Rowe | John | Sidney | brick machine | 10 | 11 | 1898 | |
| 444963 | Russell | Josephine | Tabor | fly brush | 1 | 20 | 1891 | |
| 490365 | Russell | Josephine | Tabor | tag holder for umbrellas | 1 | 24 | 1893 | |
| 140595 | Salyer | William | H. | Hamburgh | earth boring machine | 7 | 8 | 1873 |
| 193999 | Sanders | Thomas | Hamburg | harrow and cultivator | 8 | 7 | 1877 | |
| 2434124 | Schaaf | Edward | J. | Anderson | corn harvester | 1 | 6 | 1948 |
| 2571865 | Schaaf | Edward | J. | Anderson | corn picker with cutter | 10 | 16 | 1951 |
| 514943 | Schick | Charles | Imogene | corn planter | 2 | 20 | 1894 | |
| 281569 | Secor | William | H. | Farragut | combined corn harvester and husker | 7 | 17 | 1883 |
| 1246950 | Sederstram | Gus | Farragut | latch | 11 | 20 | 1917 | |
| 2200642 | Shell | Melvin | O. | Riverton | detachable funnel | 5 | 14 | 1940 |
| 1921889 | Shelton | Herbert | E. | Hamburg | newspaper receiver | 8 | 8 | 1933 |
| 2531081 | Shipper | Melvin | W. | Tabor | power mower grass raiser | 11 | 21 | 1950 |
| 780919 | Shockley | Ned | Farragut | dentometer | 1 | 24 | 1905 | |
| 131310 | Sloan | William | B. | Hamburgh | switch lock | 9 | 10 | 1872 |
| 127376 | Sloan | William | B. | Hamburgh | blind slat adjuster | 5 | 28 | 1872 |
| 135166 | Sloan | William | B. | Hamburgh | blind slat adjuster | 1 | 21 | 1873 |
| 7063325 | Smith | Wendy | Hamburg | means and method for playing a card-catching game | 6 | 20 | 2006 | |
| 889822 | Snyder | Charles | H. | Percival | road scraper | 6 | 2 | 1908 |
| 510719 | Snyder | Charles | H. | Percival | car coupling | 12 | 12 | 1893 |
| 7303537 | Snyder | Roger | L. | Sidney | ambulation assistance device | 12 | 4 | 2007 |
| 7303537 | Snyder | Jean | M. | Sidney | ambulation assistance device | 12 | 4 | 2007 |
| 3341699 | Somermeyer | Harry | J. | Hamburg | light assembly for attachment to a gutter | 9 | 12 | 1967 |
| 123847 | Spees | Francis | Tabor | well auger | 2 | 20 | 1872 | |
| 342144 | Spees | Frederic | B. | Tabor | end gate hinge | 5 | 18 | 1886 |
| 1453481 | Spiegel | Chris | F.H. | Hamburg | heater for water tanks | 5 | 1 | 1923 |
| 122973 | Spragg | Garret | S. | Tabor | gate | 1 | 23 | 1872 |
| 356697 | Squier | Frank | Hamburg | staple extractor | 1 | 25 | 1887 | |
| 916050 | Steele | Frank | J. | Imogene | hay stacker | 3 | 23 | 1909 |
| 1818017 | Stevens | Raymond | K. | Sidney | water fountain for poultry | 8 | 11 | 1931 |
| 906079 | Stevens | Charles | W. | Sidney | railroad spike | 12 | 8 | 1908 |
| 890723 | Stevens | Raymond | K. | Sidney | neck yoke attachment | 6 | 16 | 1908 |
| 852355 | Stevens | Raymond | K. | Sidney | automatic gas cut off | 4 | 30 | 1907 |
| 835921 | Stevens | Charles | W. | Sidney | crate | 11 | 13 | 1906 |
| 351004 | Study | Leonard | McPaul | harvester cutter | 10 | 19 | 1886 | |
| 69862 | Study | Leonard | Plum Hallow | corn planter | 10 | 15 | 1867 | |
| 166156 | Study | Leonard | Plum Hallow | harrow | 7 | 27 | 1875 | |
| 248232 | Study | Leonard | Plum Hallow | clothes pounder | 10 | 11 | 1881 | |
| 1252195 | Study | Leonard | Thurman | fan propeller | 1 | 1 | 1918 | |
| 772004 | Study | Leonard | Thurman | cutting apparatus for mowing machines | 10 | 11 | 1904 | |
| 748118 | Study | Leonard | Thurman | cutting apparatus for mowing machines | 12 | 29 | 1903 | |
| 131310 | Sweetser | Edward | H. | Hamburgh | switch lock | 9 | 10 | 1872 |
| 130766 | Sweetzer | Edward | H. | Hamburgh | sash holder | 8 | 20 | 1872 |
| RE9264 | Thornton | John | T. | Farragut | thrashing machine | 6 | 22 | 1880 |
| 651216 | Toedt | Frederick | W. | Hamburg | gas engine | 6 | 5 | 1900 |
| 691084 | Toedt | Frederick | W. | Hamburg | compound explosive engine | 1 | 14 | 1902 |
| 691083 | Toedt | Frederick | W. | Hamburg | compound explosive engine | 1 | 14 | 1902 |
| 722774 | Toedt | Frederick | W. | Hamburg | explosive engine | 3 | 17 | 1903 |
| 650549 | Toedt | Frederick | W. | Hamburg | gas engine | 5 | 29 | 1900 |
| 1278794 | Travis | Ernest | M. | Sidney | rear lighting system | 9 | 10 | 1918 |
| 2253591 | Travis | Ralph | L. | Sidney | pulley | 8 | 26 | 1941 |
| 2859642 | Travis | Ralph | L. | Sidney | device for sharpening chain saw chains | 11 | 11 | 1958 |
| 2900850 | Travis | Ralph | L. | Sidney | device for sharpening chain saw chains | 8 | 25 | 1959 |
| 3023646 | Travis | Ernest | M. | Sidney | chain saw sharpener | 3 | 6 | 1962 |
| 3037791 | Travis | Ralph | L. | Sidney | drawbar attached traction booster for towing vehicles | 6 | 5 | 1962 |
| 1634698 | Travis | Leonard | Sidney | chain coupling and tightener | 7 | 5 | 1927 | |
| 3163363 | Travis | Ralph | L. | Sidney | combination fog, straight stream, and spray nozzle | 12 | 29 | 1964 |
| 3241773 | Travis | Ralph | L. | Sidney | combination hoses nozzle | 3 | 22 | 1966 |
| 2211393 | Travis | Leonard | Sidney | drill bit holder | 8 | 13 | 1940 | |
| 297035 | Travis | Martin | A. | Hamburg | cultivator | 4 | 15 | 1884 |
| 102883 | Treat | Sidney | C. | Tabor | liquid meter | 5 | 10 | 1870 |
| 1015656 | Valentine | Albert | Thurman | flying machine | 1 | 23 | 1912 | |
| 1934894 | Valentine | Loyd | L. | Hamburg | heat regulators for electric irons | 11 | 14 | 1933 |
| D30175 | Wagner | Frank | Sidney | counter mat | 2 | 14 | 1899 | |
| 167483 | Warnock | David | Percival | washing machine | 9 | 7 | 1875 | |
| 399954 | Warrell | Nicholas | Farragut | hinge joint for electric belts | 3 | 19 | 1889 | |
| RE5376 | Welpton | John | B. | Tabor | improvement in hame tug clips | 4 | 22 | 1873 |
| 137519 | Welpton | John | B. | Tabor | buckle attachment to harness saddles | 4 | 1 | 1873 |
| 125237 | Welpton | John | B. | Tabor | tug clip | 4 | 2 | 1872 |
| 2196541 | Whisler | Jesse | J. | Farragut | ice blocking and trimming machine | 4 | 9 | 1940 |
| 164891 | Wieterhold | Vallantine | Hamburgh | brake block for wagons | 6 | 22 | 1875 | |
| 91504 | Wilcox | Hiram | L. | Percival | hide tanning process | 6 | 15 | 1869 |
| 127130 | Willcox | Eli | Hamburgh | washing machine | 5 | 21 | 1872 | |
| 118320 | Willcox | Eli | Hamburgh | churn | 8 | 22 | 1871 | |
| 98326 | Wilson | Jesse | A. | Hamburgh | cultivator | 12 | 28 | 1869 |
| 725609 | Wolfe | John | W. | Randolph | ore separator | 4 | 14 | 1903 |
| 1945843 | Woodruff | Walter | N. | Farragut | canvas belt slat protector | 2 | 6 | 1934 |
| 193743 | Woodside | Lewis | S. | Riverton | check row attachment for corn planters | 7 | 31 | 1877 |
| 809486 | Wyant | Willie | H. | Tabor | radiator | 1 | 9 | 1906 |
| 510225 | Young | Charles | L. | Imogene | portable grain dump | 12 | 5 | 1893 |
| 495619 | Youngs | William | H. | Randolph | fan | 4 | 18 | 1893 |
| 304250 | Yowell | Fielding | W. | Sidney | drag-saw | 8 | 26 | 1884 |
Source: State Library of Iowa, transcribed by Karyn Techau | ||||||||