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All Patents in class 76/3
Patents 1 - 13 of 13
First set of recordsLast set of records
66,297Jul. 02, 1867E.O. Carrington, E. CarringtonImproved machine for cutting down augerstool making machines
117,594Aug. 01, 1871C.W. BealsImprovement in Devices for Resetting Old Auger-Bitsdrill accessories
133,238Nov. 19, 1872W.P. MaxsonMachine for Finishing the Lips & Points of Augersmaking drills and augers
195,963Oct. 09, 1877G.R. StetsonImprovement in machines for clearing twist-drillsmaking drills and augers
209,782Nov. 12, 1878J. SwanImprovement in the Manufacture of Auger-Bitsmaking drills and augers
302,527Jul. 22, 1884J. SwanMachine for Milling Augersmaking drills and augers
303,239Aug. 05, 1884J. SwanMechanism for Manufacturing Augersmaking drills and augers
307,074Oct. 21, 1884J. SwanTool for Cutting the Floor-Lip and Cutting-Spur of Auger-Bitsmaking drills and augers
313,456Mar. 03, 1885J. SwanMachine for the Manufacture of Auger-Bitsmaking drills and augers
333,689Jan. 05, 1886G.R. StetsonMachine for Clearing Twist Drillsmaking drills and augers
387,188Jul. 31, 1888J. SwanMachine for Cutting Floor-Lips and Spurs on Augers and Bitsmaking drills and augers
486,239Nov. 15, 1892A.U. SmithMachine for Shaping Auger-Headsmaking drills and augers
1,825,007Sep. 29, 1931N.F. McNaughtValve seat reconstruction tool
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