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All Patents in class 470/96
Patents 1 - 15 of 77
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NumberDatePatenteeTitleType
19,752Mar. 30, 1858R.H. ColeScrew Cutting Machinescrew machines
79,971Jul. 14, 1868E. GouldImproved screw-threading machine
141,299Jul. 29, 1873C.C. WalworthScrew Cutting Machinesscrewcutting lathes
162,194Apr. 20, 1875E. SchlenkerImprovement in bolt-threading machinesmetal threading machines
312,700Feb. 24, 1885M. BlakeyMachine for Making Tapered Threaded Socketspipe threading machines
318,654May 26, 1885J.L. RathbunTapping Devicetap and die holders
329,830Nov. 03, 1885M.W. GrovesteenElectric Signaling Apparatus for Machinerymetal lathe accessories and attachments
332,242Dec. 15, 1885W. EvansDrill-pressdrill presses
357,807Feb. 15, 1887E. Allen, D.S. HenrieDrilling-machinedrill presses
423,729Mar. 18, 1890J.H. Newbury, G.A. ChapmanDevice for Cutting Screw Threadsmetal threading machines
437,459Sep. 30, 1890F. SchoffPortable reaming and tapping toolportable metal drilling machines
437,713Oct. 07, 1890G.A. Chapman, J.H. NewburyMethod of Cutting Screw Threadspipe threading machines
450,403Apr. 14, 1891E.A. Corliss, administratrix, G.H. Corliss, deceased (estate of)Machine for Fitting the Exhaust Valve Boxes of Steam Enginesmetalworking machines
465,827Dec. 29, 1891H.C. BradfordTapping and Thread Cutting Machinetapping machines
466,946Jan. 12, 1892D.J. HurleyTapping Devicetap and die holders
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