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| Patents for G. M. Copenhaver | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 404,001 | May 28, 1889 | E.E. Heacock | Combination Tool | |
 | 446,072 | Feb. 10, 1891 | C.H. Myers | Combined Ratchet Wrench & Screwdriver | |
 | 446,073 | Feb. 10, 1891 | C.H. Myers | Ratchet Wrench & Drill | |
| 528,211 | Oct. 30, 1894 | H.G. Sedwick | Slow Motion Attachment for Microscopes | ||
 | 534,453 | Feb. 19, 1895 | T.M. Simcoe | Wrench | |
 | 638,378 | Dec. 05, 1899 | W.S. Casterlin | Tongs | |