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| Patents for John G. Hinkel | |||||
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| Number | Date | Patentee | Title | Type | |
| 292,473 | Jan. 29, 1884 | E.C. Walford, F.G. Dieterich | Cigar Dealer's Knife | combination tools | |
| 472,106 | Apr. 05, 1892 | J. Charter | Gas Engine | gas and gasoline engines | |
| 572,934 | Dec. 08, 1896 | W.J. Smith | Die Head for Screw Cutting | tap and die holders | |
| 582,620 | May 18, 1897 | J.A. Charter | Gas Engine | internal combustion engines | |