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| Patents for J. F. Hemenway | |||||
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| Number | Date | Patentee | Title | Type | |
| 435,375 | Aug. 26, 1890 | H.J. White | Wringer Clamp | C clamps | |
| D30,237 | Feb. 21, 1899 | L.P. Smith | Member For Pairs of Pliers | pliers | |