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| Patents for Jno. Y. Hinkel | |||||
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| Number | Date | Patentee | Title | Type | |
| 474,384 | May 10, 1892 | L. Hinkle | Combination Tool | combination tools | |
| 503,528 | Aug. 15, 1893 | J.T. Cowley | Pattern Maker's Scale | shrink rules | |