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| Patents for Austin Hart | |||||
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| Number | Date | Patentee | Title | Type | |
| 61,855 | Feb. 05, 1867 | W. Nash | Improved saw set | saw sets | |
| 81,608 | Sep. 01, 1868 | J.P. Curtiss | Machine for Grinding Metal Articles | grinders | |
| 186,998 | Feb. 06, 1877 | H.A. Foss | Cutter Adjustment with a Differential Screw | bench planes | |
| 550,144 | Nov. 19, 1895 | A.B. Stone | Wrench | nut wrenches | |