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| Patents for A. R. Crosman | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,148,677 | Aug. 03, 1915 | J.G. Hey | Belt-gearing for drill-presses and the like | drill presses | |
| 1,216,689 | Feb. 20, 1917 | J.G. Hey | Feed mechanism for drilling-machines | drill presses | |