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Patents for A. R. Crosman
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
1,148,677Aug. 03, 1915J.G. HeyBelt-gearing for drill-presses and the likedrill presses
1,216,689Feb. 20, 1917J.G. HeyFeed mechanism for drilling-machinesdrill presses
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