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| Patents for J. Y. Hinkel | |||||
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| Number | Date | Patentee | Title | Type | |
| 583,346 | May 25, 1897 | S.W. Wardwell, Jr. | Wrench | screw adjust wrenches | |
| 583,347 | May 25, 1897 | S.W. Wardwell, Jr. | Wrench | screw adjust wrenches | |