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| Patents for Alfred T. Sinker | |||||
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| Number | Date | Patentee | Title | Type | |
| 249,721 | Nov. 15, 1881 | G.H. Zschech | Saw-guide | circular saw accessories | |
| 250,472 | Dec. 06, 1881 | G.H. Zschech | Wheel for saw-mill carriages | sawmill carriages | |