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All Patents in class 408/163
Patents 1 - 14 of 14
First set of recordsLast set of records
NumberDatePatenteeTitleType
421,773Feb. 18, 1890T.L. SmithScrew Cutting Dietaps and dies
473,582Apr. 26, 1892H.B. KeiperScrew-cutting plate
610,158Aug. 30, 1898F.G. EcholsTool for Cutting Screw Threadstap and die holders
863,515Aug. 13, 1907J.O. DixonScrew Threading Machinemetal threading machines
871,451Nov. 19, 1907A.J. SmartScrew-cutting die and holder therefortap wrenches and die stocks
890,848Jun. 16, 1908E.S. Mummert, J.O. DixonScrew Threading Machinemetal threading machines
995,413Jun. 13, 1911H.F. MusslerReamerreamers
1,419,448Jun. 13, 1922C.E. DavisBoring Headboring heads
1,563,108Nov. 24, 1925A.J. PranceThread-cutting dietapping heads and chucks
1,696,195Dec. 25, 1928A.F. FroussardCutter Headboring heads
2,189,604Feb. 06, 1940F.P. HealyBoring bar guiding mechanismboring bars
2,393,600Jan. 29, 1946R.W. EcoffThread cutting machinemetal threading machines
2,746,066May 22, 1956P.A. White, R.R. FinnCollapsible Threading Die for Selectively Cutting Straight or Taper Threadstaps and dies
3,222,956Dec. 14, 1965L.A. Attermeyer, L.A. DeverMachine Tool Spindle Mechanismvertical boring mills
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