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| Patents for E. M. Williams | |||||
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| Number | Date | Patentee | Title | Type | |
| 236,620 | Jan. 11, 1881 | W.J. Perkins | Shingle-sawing machine | shingle machines | |
| 1,010,479 | Dec. 05, 1911 | W.A. Wright, J.S. Collison | Wrench | pliers type wrenches | |