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All Patents of Type: hand grinders
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
442,349Dec. 09, 1890A.B. BenedictMeans for operating grinding-machineshand grinders
813,167Feb. 20, 1906L.H. OlmstedGrinding apparatushand grinders
1,006,026Oct. 17, 1911J.M. ThompsonGear-casinghand grinders
1,220,086Mar. 20, 1917B.L. FryGrinding-machinehand grinders
1,298,653Apr. 01, 1919E. BocksheAdjustable casing for grindershand grinders
1,386,088Aug. 02, 1921W.J. BoettcherTool Grinderhand grinders
1,567,442Dec. 29, 1925F.S. HylandGrinderhand grinders
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