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All Patents in class 451/221
Patents 1 - 15 of 18
First set of recordsNext set of recordsLast set of records
63,773Apr. 09, 1867B.D. WhitneyGrinding cylinder sawssaw sharpening machines
76,301Apr. 07, 1868E. Carrington, E.O. CarringtonImprovement in Machine for Grinding and Cutting Down Augersmaking drills and augers
187,770Feb. 27, 1877L. Sharpe, executor, C.D. Owen, executor, J.R. Brown (deceased), estate ofGrinding Machinecylindrical grinders
626,337Jun. 06, 1899C.H. NortonGrinding-Machinecylindrical grinders
731,087Jun. 16, 1903Z.R. TuckerCarriage Reversing Mechanism for Grinding Machinescylindrical grinders
1,249,632Dec. 11, 1917H.R. IslerGrinding-machinesurface grinders
1,262,540Apr. 09, 1918J. MillerGrinding Machinegrinding machines
1,267,534May 28, 1918W.F. FraserGrinder
1,287,731Dec. 17, 1918F. MüllerAutomatic Grinding Machine
1,288,998Dec. 24, 1918E. RivettGrinding Machinegrinding machines
1,290,896Jan. 14, 1919W.L. BryantMachine for grinding metalgrinding machines
1,394,418Oct. 18, 1921G.W. LantGrinding Machinegrinders
1,575,968Mar. 09, 1926W.L. BryantGrinding machinegrinding machines
1,664,024Mar. 27, 1928J. de KoningGrinding machine
2,169,159Aug. 08, 1939G. MöllerMeans for Accurate Screw Cuttingmetalworking machines
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