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All Patents in class 451/397
Patents 1 - 15 of 31
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NumberDatePatenteeTitleType
70,788Nov. 12, 1867T. Birch, A. SowdenImprovement in grinding machine for circular sawsmaking sawblades
306,723Oct. 21, 1884J. Du BoisLathe for Turning Wheelspulley turning lathes
379,307Mar. 13, 1888R.B. CodlingLathewood lathes
610,677Sep. 13, 1898C.L. GrohmannTail-stock for milling-machinesmilling machines
969,183Sep. 06, 1910J.M. NashAbrading-machinesanding machines
1,290,896Jan. 14, 1919W.L. BryantMachine for grinding metalcylindrical grinders
1,535,452Apr. 28, 1925P. ConradsonGrinding Machineinternal grinders
1,776,241Sep. 16, 1930F.S. Haas, J.E. CasterGrinding Machinerygrinding machines
1,790,848Feb. 03, 1931A. Schinkez, E.R. SmithAutomatic Lathe and Blank Feeding Means Thereformetal lathes
1,938,759Dec. 12, 1933H. ErnstGrinding Machinegrinding machines
1,972,316Sep. 04, 1934C.H. RandolphProcess of and apparatus for grinding internal surfaces of tubes
2,211,685Aug. 13, 1940B.A. Kearns, G.W. BinnsCenterless Bar Grinder Machinegrinding machines
2,282,048May 05, 1942A.J. GrafHeadstock for Machine Toolsgrinding machines
2,344,371Mar. 14, 1944R.M. Shaw, Jr.Ring Grinding Machine grinding machines
2,408,995Oct. 08, 1946J.J. OsplackSpindle bearingmetalworking machine bearings
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