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All Patents in class 451/283
Patents 1 - 8 of 8
First set of recordsLast set of records
NumberDatePatenteeTitleType
8,706XMar. 24, 1835P. CooperGrinding and polishing stone, glass, etc.glassmaker
282,761Aug. 07, 1883J.T. ObenchainMachine for Facing Millstonesmiller
492,095Feb. 21, 1893P. MedartMachine for grinding pulley-shafts and their couplingsgrinders
1,264,129Apr. 23, 1918M.O. ReevesGrinding Machine
1,904,642Apr. 18, 1933C.G. HuntGrinding Machinegrinding machines
2,010,359Aug. 06, 1935F.S. HaasGrinding Machinegrinding machines
2,025,714Dec. 31, 1935G.W. BinnsGrinding Machinegrinding machines
2,136,188Nov. 08, 1938L. Spraker, G.R. GagneValve Refacing Devicevalve grinding tools
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