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| Patents for George L. Metcalf | |||||
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| Number | Date | Patentee | Title | Type | |
| 291,007 | Dec. 25, 1883 | W.E. Thayer | Ratchet Tool Holder | ratcheting screwdrivers | |
| 413,178 | Oct. 22, 1889 | E.E. Doe | Combined Scratch and Bit Gage | marking gauges | |