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All Patents in class 451/273
Patents 1 - 15 of 25
First set of recordsNext set of recordsLast set of records
45,679Dec. 27, 1864P. SchragImprovement in machines for sandpapering pencilssanding machines
98,850Jan. 18, 1870H. Harpin, J. CoulterStone Dressing Machinestone dressing machines
108,822Nov. 01, 1870J.S. Lane, J.H. PitkinMachine for Grinding and Polishing Metalpolishing and buffing machinery
182,284Sep. 19, 1876J.L. OtisPlaner-knife grindertool grinders
238,366Mar. 01, 1881W.H. DoaneGrinding machine
420,022Jan. 21, 1890W.F. SteinhoffGrinding-machinesharpening machines
504,000Aug. 29, 1893M.M. Aust, C.P. ThielMachine for Grinding Thread Cutting Toolstool grinders
507,634Oct. 31, 1893S.C. RogersKnife-grindersharpening machines
705,226Jul. 22, 1902J. EttingerGrinding Machinetool grinders
945,455Jan. 04, 1910B.M. HansonReducing-machinemilling machines
1,052,605Feb. 11, 1913S. MacKayGrinding Machinesharpening machines
1,077,306Nov. 04, 1913P.H. RootGrinding Machinesharpeners
1,081,465Dec. 16, 1913J.F. PribnowEmery-wheel bench-grinderbench or pedestal grinders
1,231,238Jun. 26, 1917R.L. CarterGagesanding machines
1,482,465Feb. 05, 1924F.E. GardnerGrinding machinedisk sanders
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