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| Patents for Chas. S. Heyer | |||||
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| Number | Date | Patentee | Title | Type | |
| 497,938 | May 23, 1893 | J.W. Yingling | Combined Square and Bevel-Gage | marking gauges | |
| 527,132 | Oct. 09, 1894 | G.A. Teel | Fuse Capper | pliers | |
| 707,901 | Aug. 26, 1902 | O.L. Cheney | Stock for Tools | tool holders | |
| 768,161 | Aug. 23, 1904 | E.L. Thompson | Combined Wrench And Pliers | pliers | |