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| All Patents in class 74/501.6 | |||||
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| Number | Date | Patentee | Title | Type | |
| 18,396 | Oct. 13, 1857 | J.J. Heich | Corn Husker | corn huskers | |
| 932,381 | Aug. 24, 1909 | W.F. Folmer | Photographic Shutter | camera shutters | |