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All Patents of Type: grinding wheels
Patents 1 - 15 of 38
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NumberDatePatenteeTitleType
25,747Oct. 11, 1859T.J. MayallImprovement in methods of combining emery with caoutchoucgrinding wheels
95,824Oct. 12, 1869E.C. Merrill, A.W. WillardImproved composition for emery-wheels and other abrading-implementsgrinding wheels
113,439Apr. 04, 1871E.C. MerrillImprovement in the manufacture of emery-wheels and artificial stonegrinding wheels
163,025May 11, 1875S.G. MorrisonImprovement in emery-wheelsgrinding wheels
163,880Jun. 01, 1875S.G. MorrisonImprovement in modes of applying emery to metal surfacesgrinding wheels
167,527Sep. 07, 1875G. HartImprovement in molds for forming artificial grindstonesgrinding wheels
172,337Jan. 18, 1876S.G. MorrisonImprovement in emery grinding-wheelsgrinding wheels
187,167Feb. 06, 1877F.B. NortonImprovement in grinding and polishing surfaces and wheelsgrinding wheels
CA-9,096Aug. 06, 1878G. HartImprovements on emery wheelsgrinding wheels
226,066Mar. 30, 1880G. HartEmery-wheelgrinding wheels
227,402May 11, 1880J.F. WoodTreatment of emery-wheelsgrinding wheels
275,561Apr. 10, 1883S.T. WrayPolishing or buffing wheelgrinding wheels
341,867May 18, 1886L.W. AndrewsGrinding-machinegrinding wheels
467,252Jan. 19, 1892S.G. HodgesWheelgrinding wheels
467,253Jan. 19, 1892S.G. HodgesWheelgrinding wheels
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