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All Patents in class 451/200
Patents 1 - 9 of 9
First set of recordsLast set of records
NumberDatePatenteeTitleType
8,929May 04, 1852W. SouthwellMachinery for grinding or polishing saw-blades, &c.tool making
390,931Oct. 09, 1888B.D. WhitneySharpening-machineindustrial machine gearing
407,721Jul. 23, 1889J.D. Cox, Jr.Machine for back-clearing twist-drillstool making machines
562,268Jun. 16, 1896F. AshtonApparatus for Grinding Parallel Spindles Rods or Shaftscylindrical grinders
2,032,589Mar. 03, 1936E.A. OverstedtGear Lapping Machinegear lapping machines
2,232,408Feb. 18, 1941S.M. ShawGear Finishing Machinegear making machines
2,304,580Dec. 08, 1942J.M. LuersGrinding Machinegrinding machines
2,561,004Jul. 17, 1951W.G. Baldenhofer, J.C. WilsonMethod and Apparatus for Grindingsurface grinders
2,578,531Dec. 11, 1951C.H. Drury, E.V. FlandersMachine for Grinding Impeller Bucket Shanksprofile and contour grinders
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