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| Patents for John C. Hofer | |||||
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| Number | Date | Patentee | Title | Type | |
| 78,740 | Jun. 09, 1868 | J.C. Hofer | Improvement in coopers' croze | crozes | |
| 91,634 | Jun. 22, 1869 | W. Hofer | Improvement in screw-driver | spiral screwdrivers | |