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All Patents in class 451/121
Patents 1 - 15 of 20
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NumberDatePatenteeTitleType
151,669Jun. 02, 1874M. NewmanImprovement in metal shaping and dressing machinessurface grinders
487,140Nov. 29, 1892C.A. WordenMachine for sharpening razors
516,146Mar. 06, 1894C.A. WordenMachine for sharpening razors, shears, &c.
856,662Jun. 11, 1907G.W. SmithFace-mill grindertool grinders
1,026,022May 14, 1912W.F. CremeanGrinding Machinecylindrical grinders
1,212,214Jan. 16, 1917J. HalterbeckAbrading-machinesanding machines
1,281,512Oct. 15, 1918J.A. CarothersSaw Grinding Machinesaw sharpening machines
1,780,886Nov. 04, 1930J.F. Pribnow, E.F. MitchellCircular-saw-sharpening machinesaw sharpening machines
1,849,868Mar. 15, 1932S. EinsteinGrinder Wheel Oscillatorgrinder dressers
1,936,992Nov. 28, 1933B.D. PinkneySanding machinesanding machines
2,081,360May 25, 1937A.W. MallRail slotter
2,214,141Sep. 10, 1940A.W. MallRail slotter
2,286,821Jun. 16, 1942L.D. LibbyMachine for Cutting Dies and the Likemilling machines
2,335,625Nov. 30, 1943J.C. WilsonGrinding Machinegrinders
2,381,687Aug. 07, 1945E.A. Allen, R.S. PyneDrive for oscillating grindersgrinders
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