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All Patents in class 451/393
Patents 31 - 45 of 47
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NumberDatePatenteeTitleType
1,355,167Oct. 12, 1920C.A. RichMilling Machinemilling machines
1,395,391Nov. 01, 1921E.R. ConnersDevice for Truing and Dressing Grinding Wheelsgrinder dressers
1,477,480Dec. 11, 1923W.F. GroeneCombined power and hand operated feed mechanismmetal lathes
1,573,818Feb. 23, 1926S. Einstein, H.R. IslerShock Absorbing Motion Acceleratormetalworking machine mechanisms
1,664,024Mar. 27, 1928J. de KoningGrinding machine
1,959,329May 22, 1934A.F. BennettMilling Machinemilling machines
1,965,221Jul. 03, 1934M. De HaasBacklash Eliminatormetalworking machine mechanisms
1,966,888Jul. 17, 1934L.A. DumserMachine tool
1,980,872Nov. 13, 1934A.F. MoulApparatus for grindingsharpening machines
2,010,366Aug. 06, 1935B.A. KearnsGrinding Machinegrinding machines
2,309,668Feb. 02, 1943J.E. PoormanGrinding Machine surface grinders
2,343,577Mar. 07, 1944J.E. PoormanGrinding Machine surface grinders
2,348,281May 09, 1944S.G. BradyMachine for Grinding Racksgear grinding machines
2,386,283Oct. 09, 1945E.A. Reibig, C.A. WikenMachine toolsurface grinders
2,400,767May 21, 1946C. Melidoni, H. GassGrinding attachmentcylindrical grinders
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