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| Patents for Percy J. Griffith | |||||
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| Number | Date | Patentee | Title | Type | |
| 536,312 | Mar. 26, 1895 | E.N. Woodward | Wrench | axle nut wrenches | |
| 553,008 | Jan. 14, 1896 | F.E. Lodetti | Wrench | screw adjust wrenches | |