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| Patents for Jas. B. Erwin | |||||
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| Number | Date | Patentee | Title | Type | |
| 760,532 | May 24, 1904 | A.J. Gerhardt | Wrench For Meat Choppers | auxiliary wrenches | |
| 1,313,868 | Aug. 19, 1919 | B. Urich | Puncture Closing Device For Tires | rubber tire repair tools | |