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Patents for John D. Rovick
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
2,167,146Jul. 25, 1939J.D. Rovick, J.C. DraderMeans for Finishing Gearsgear cutting tools
2,245,654Jun. 17, 1941J.D. Rovick, J.C. DraderGear Lapping and Finishing Machinegear lapping machines
2,257,195Sep. 30, 1941J.D. RovickInternal Gear Finishing Machinegear making machines
2,270,741Jan. 20, 1942J.D. RovickMachine and Tool for Finishing Gearsgear making machines
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