| Search Again | Story County, Iowa Inventory Patents |
Story Co. Home Page |
| Name | Patent Title | Patent Number |
City | Year |
|---|---|---|---|---|
| Ernest J. DOWDEN | speed registering device | 02657749 | Ames | 1953 |
| Ernest J. DOWDEN | speed registering and tabulating apparatus | 02758647 | Ames | 1956 |
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