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| Patents for George W. Irwin | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,189,422 | Feb. 06, 1940 | G.W. Irwin | Combined drilling and tapping machine | drill presses | |
| 2,267,238 | Dec. 23, 1941 | G.W. Irwin | Drill press driving mechanism | drill presses | |