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| Patents for George M. Allen | |||||
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| Number | Date | Patentee | Title | Type | |
| 301,320 | Jul. 01, 1884 | G.M. Allen | Gas Engine | gas and gasoline engines | |
| 379,627 | Mar. 20, 1888 | G.M. Allen | Wrench Applied to Jack-Screws | ratchet wrenches | |