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All Patents in class 451/221
Patents 1 - 15 of 15
First 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
1,262,540Apr. 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
1,575,968Mar. 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
2,448,245Aug. 31, 1948H.F. BakewellGrinding fixturetool grinders
2,604,740Jul. 29, 1952H.C. PerkinsMachine for yieldably presenting work to buffing or polishing wheels or belts
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