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| Patents for Martin Hardsocg | |||||
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| Picture | Number | Date | Patentee | Title | |
| 282,632 | Aug. 07, 1883 | M. Hardsocg | Mining Machine | ||
 | 392,119 | Oct. 30, 1888 | M. Hardsocg | Method of Twisting Augers | |
 | 1,008,261 | Nov. 07, 1911 | A.A. Harvie | Hardened Corners Process | |