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| All Patents in class 81/901 | |||||
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| Number | Date | Patentee | Title | Type | |
| 300,317 | Jun. 10, 1884 | C.E. Griffith | Bit For Inserting Screw Eyes | brace wrenches | |
| 841,472 | Jan. 15, 1907 | W.H. Vanderherchien | Implement for Driving Screwhooks and Eyes | screwdriver blades | |
| 855,905 | Jun. 04, 1907 | H.C. Rhoads | Screw Eye Driver | screwdriver blades | |
| 882,937 | Mar. 24, 1908 | T.J. Fegley | Screw-eye driver | screwdriver blades | |