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All Patents in class 408/176
Patents 1 - 7 of 7
First set of recordsLast set of records
72,747Dec. 31, 1867D. McArthurDiestock for Cutting Screwstap wrenches and die stocks
309,374Dec. 16, 1884M.C. Bignall, G.W. WhitmanPipe cutting and threading machinepipe cutting machines
406,857Jul. 09, 1889A. SaundersScrew Cutting Diepipe threading machines
417,659Dec. 17, 1889J.S. BancroftMeans for Operating the Die Heads of Bolt Threading Machinesmetal threading machines
1,289,721Dec. 31, 1918H.L. FisherCutter-headpipe threading machines
1,327,008Jan. 06, 1920G.A. AndersonCutter-headpipe threading machines
1,506,484Aug. 26, 1924L.F. HartDiestocktaps and dies
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