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| Patents for Henry J. Martin | |||||
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| Number | Date | Patentee | Title | Type | |
| 544,738 | Aug. 20, 1895 | H.J. Martin | Wrench | wrench combination tools | |
| 544,739 | Aug. 20, 1895 | H.J. Martin | Wrench | quick adjust wrenches | |
| 557,311 | Mar. 31, 1896 | H.J. Martin | Wrench | screw adjust wrenches | |
| D28,487 | Apr. 19, 1898 | H.J. Martin | Wrench Jaw | wrench jaw components | |
| 670,681 | Mar. 26, 1901 | H.J. Martin | Adjustable Pipe and Nut Wrench | alligator wrenches | |