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| Patents for S. Schriver | |||||
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| Number | Date | Patentee | Title | Type | |
| 21,960 | Nov. 02, 1858 | W.O. Hickok | Tap for Cutting Wooden Screws | drill bits | |
| 21,961 | Nov. 02, 1858 | W.O. Hickok | Die for Cutting Wooden Screws | drill accessories | |
| 83,963 | Nov. 10, 1868 | G.W. Reisinger, W.O. Hickok | Improved Tool Holders for Lathes | lathe tools | |