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All Patents in class 451/449
Patents 1 - 15 of 19
First set of recordsNext set of recordsLast set of records
29,680Aug. 21, 1860H. DisstonMachine for grinding saw-bladestool making machines
233,488Oct. 19, 1880S. DarlingArt of Manufacturing Mathematical Instruments
405,706Jun. 25, 1889E.R. HydeSurface Grinding or Planing Machinesurface grinders
411,729Sep. 24, 1889W.J. PerkinsSaw-grinding machinesaw sharpening machines
487,140Nov. 29, 1892C.A. WordenMachine for sharpening razors
544,439Aug. 13, 1895A.B. LandisGrinding-machinegrinding machines
945,463Jan. 04, 1910A.B. LandisMachine for grinding cutters and reamersgrinding machines
995,256Jun. 13, 1911T. Trecker, E.J. KearneyMilling-machinewoodworking machine lubrication
1,036,783Aug. 27, 1912E.J. BeinAbrasive apparatussanding machines
1,718,562Jun. 25, 1929J.B. Armitage, E.J. KearneyMachine Tool Organizationmilling machines
1,782,235Nov. 18, 1930J.B. Armitage, E.J. KearneyMachine Tool Organizationmilling machines
2,069,097Jan. 26, 1937P.H. RootKnife grindersharpening machines
2,254,240Sep. 02, 1941E.A. OverstedtMachine for Finishing Gearsgear making machines
2,396,147Mar. 05, 1946W.G. BaldenhoferCooling System for Hydraulically-Operated Machine Toolshydraulic apparatus
2,562,229Jul. 31, 1951R.M. BellBelt grinding machinesanding machines
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