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| Patents for American Grinder Manufacturing Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,476,058 | Dec. 04, 1923 | J.B. Drahonovsky | Demountable Rim Wrench | brace wrenches | |
| 1,574,136 | Feb. 23, 1926 | H.E. Tautz, F.E. Dion | Tool grip | wrench handle components | |