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All Patents of Type: sharpeners
Patents 1 - 15 of 25
First set of recordsNext set of recordsLast set of records
240XMar. 16, 1799J. ShotwellSharpening axessharpeners
5,499XJun. 11, 1829B. SwiftSharpening scythes with a riflesharpeners
78,909Jun. 16, 1868W.H. Wilson, G.P. YorkSharpening Mowing-Machine Knivessharpening machines
79,030Jun. 16, 1868J.A. ThompsonSharpening Mowing-Machine Knivessharpening machines
342,290May 18, 1886R. DuttonMachine for Grinding Mowing Machine Knivessharpeners
534,470Feb. 19, 1895G.H. FowlerHarvester-knife grindersharpeners
567,637Sep. 15, 1896A.R. ClizbeGrinding Machinesharpeners
567,638Sep. 15, 1896A.R. ClizbeGrinding Machinesharpeners
575,737Jan. 26, 1897A.S. RobinsonMachine for grinding knives of cutter-barssharpeners
611,893Oct. 04, 1898A.R. ClizbeGrinding Machinesharpeners
629,069Jul. 18, 1899G.H. FowlerMower-knife grindersharpeners
636,192Oct. 31, 1899H.W. BolensGrinding Machinesharpeners
650,035May 22, 1900A.R. ClizbeGrinding Machinesharpeners
655,753Aug. 14, 1900H.W. BolensGrinding Machinesharpeners
CA-68,712Sep. 13, 1900A.R. ClarkeGrinding machinesharpeners
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