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| Patents for W. E. Roulter | |||||
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| Number | Date | Patentee | Title | Type | |
| 290,036 | Dec. 11, 1883 | G. Gontier | Ratchet Wrench | ratchet wrenches | |
| 290,106 | Dec. 11, 1883 | H. Port | Convertible Tool | combination tools | |