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| Patents for W. J. Hoffmaster | |||||
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| Number | Date | Patentee | Title | Type | |
| 598,528 | Feb. 08, 1898 | O.N. Miller | Combination Wrench | wrench jaw components | |
| 620,477 | Feb. 28, 1899 | O.M. Miller | Wrench | screw adjust wrenches | |