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All Patents in class 451/123
Patents 1 - 15 of 16
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NumberDatePatenteeTitleType
370,003Sep. 13, 1887C.M. BrownGrinding Lathecylindrical grinders
441,570Nov. 25, 1890R.B. LeightonLens Grinding Machinematerial grinding machines
498,240May 30, 1893R. ConraderReamer Grinding Machinetool grinders
508,196Nov. 07, 1893T.A. Willson, H. BilgramMachine for grinding the edges of spectacle or eyeglass lenses
612,239Oct. 11, 1898L.E. Harper, C.L. GrohmannMachine for dressing metals or other materialsbicycle machinery
839,080Dec. 18, 1906C.O. SmithMachine for grinding ball bearing racesgrinders
1,522,465Jan. 06, 1925G.C. KimmelInternal Grinding Machineinternal grinders
1,972,623Sep. 04, 1934R.E. HarrisonGrinding Machinegrinding machines
2,006,554Jul. 02, 1935C. HerfurthGrinding Machinegrinding machines
2,135,894Nov. 08, 1938E.C. HeadMachine for forming spiral bevel gear cutterssharpening machines
2,142,285Jan. 03, 1939H. PelphreyHob and Method of Manufacturegear cutting tools
2,254,020Aug. 26, 1941A.J. Graf, C.L. SchulteCambering Mechanism for Grinding Machinesgrinding machines
2,408,949Oct. 08, 1946H. PelphreyHob Grindertool grinders
2,425,859Aug. 19, 1947O.M. BraatenCutter Grindertool grinders
2,978,843Apr. 11, 1961B.H. Johnson, F.E. BirtchApparatus for Grinding Double-Enveloping Worm Elementsgear grinding machines
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