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| Patents for A. M. Haymaker | |||||
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| Number | Date | Patentee | Title | Type | |
| 626,037 | May 30, 1899 | J.J. Rhinelander | Pipe Wrench | pipe wrenches | |
| 640,530 | Jan. 02, 1900 | J.L. Braun | Wrench | self-adjust wrenches | |