| Search Again | Story County, Iowa Inventory Patents |
Story Co. Home Page |
| Name | Patent Title | Patent Number |
City | Year |
|---|---|---|---|---|
| Robert A. LOHNES | resistivity measuring device having vertically spaced ring electrode and a central electrode | 03548304 | Ames | 1970 |
| Robert A. LOHNES | method and means for testing soils | 04142403 | Ames | 1979 |
| Robert A. LOHNES | triaxial apparatus for testing particulate material and method of using the same | 04502338 | Ames | 1985 |
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