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All Patents in class 451/552
Patents 1 - 6 of 6
First set of recordsLast set of records
NumberDatePatenteeTitleType
97,090Nov. 23, 1869W.H. HowlandImprovement in knife-sharpenersharpening apparatus
102,218Apr. 26, 1870H. BrownImprovement in oil-stone holderssharpening jigs and fixtures
664,319Dec. 18, 1900M.B. HillOil-stone
985,473Feb. 28, 1911J.R. ThomasBlade-truing devicewoodworking machine sharpening mechanisms
4,259,815Apr. 07, 1981W.G. KubanBlade sharpenersharpening apparatus
5,018,315May 28, 1991L.G. Lee, F.A. McLean, J.H. GagnonApparatus for holding and storing sharpening stones
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