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All Patents of Type: grinding wheels
Patents 1 - 10 of 10
First set of recordsLast set of records
NumberDatePatenteeTitleType
25,747Oct. 11, 1859T.J. MayallImprovement in methods of combining emery with caoutchoucgrinding wheels
167,527Sep. 07, 1875G. HartImprovement in molds for forming artificial grindstonesgrinding wheels
201,778Mar. 26, 1878G. HartEmery Wheelgrinding wheels
226,066Mar. 30, 1880G. HartEmery-wheelgrinding wheels
275,561Apr. 10, 1883S.T. WrayPolishing or buffing wheelgrinding wheels
491,789Feb. 14, 1893D.F. WalkerGrindstone, emery-wheel, &c.grinding wheels
639,035Dec. 12, 1899G. HartChuck for emery-wheelsgrinding wheels
699,302Apr. 29, 1902W.D. Howe, G.H. FowlerGrinding-wheelgrinding wheels
779,848Jan. 10, 1905G. HartGrinding-wheelgrinding wheels
825,460Jul. 10, 1906G. HartGrinding-wheelgrinding wheels
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