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All Patents in class 72/469
Patents 1 - 13 of 13
First set of recordsLast set of records
6,305Apr. 10, 1849N.C. Sanford, L.B. SmithMachine for regulating the twist and diameter of screw-augerstool making machines
48,633Jul. 04, 1865E.H. TracyImprovement in Dies for Making Augersmaking drills and augers
96,847Nov. 16, 1869J. SwanDie for Forming Cook's Bitsmaking drills and augers
183,797Oct. 31, 1876L. ChapmanMachines for Punching and Swaging Metalmetal punches
224,156Feb. 03, 1880J.S. Deuse, A.H. DeuseDie for forming Double-Twist Gimletsmaking drills and augers
264,470Sep. 19, 1882C.E. Andrews, P.W. MyersDie for Heading Auger-Blanksmaking drills and augers
294,698Mar. 04, 1884N.C. StilesDie for forming pulley-centerspulley making machines
378,251Feb. 21, 1888C.H. IrwinDie for Making Auger-Bitsmaking drills and augers
419,622Jan. 21, 1890J. BaileyDie for Forming Auger-Bitsmaking drills and augers
659,522Oct. 09, 1900Z.T. FurbishApparatus for Making Ribbed Sleeves or Wheels
1,486,976Mar. 18, 1924B.J. LindgrenMachine for compressing corrugated pipes
2,994,237Aug. 01, 1961L. Pelphrey, Administratrix, H. Pelphrey, deceased (Estate of)Tooth Forming Toolgear cutting tools
3,015,243Jan. 02, 1962J.C. DraderTool for Pressure Forming Toothed Elementsgear making machines
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