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| Patents for William S. DuCharme | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,293,734 | Feb. 11, 1919 | W.S. DuCharme | Pipe Wrench | pipe wrenches | |
| 1,293,735 | Feb. 11, 1919 | W.S. DuCharme | Turret Head Wrench | nut wrenches | |