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All Patents in class 81/146
Patents 1 - 15 of 33
First set of recordsNext set of recordsLast set of records
8,922May 04, 1852A. HotchkissAdjustable Screw-Slide Wrenchscrew adjust wrenches
19,954Apr. 13, 1858E.S. ScriptureImprovement in Screw-Wrenchesnut wrenches
38,316Apr. 28, 1863A.Y. McDonaldImprovement in Screw-Wrenchesnut wrenches
76,519Apr. 07, 1868A.S. PetrieImprovement inWrenchesnut wrenches
109,949Dec. 06, 1870E.S. ScriptureImproved Mode of Constructing, Applying, and Managing a Pawl When Applied to a Notch or Tooth-Slide Wrenchquick adjust wrenches
132,057Oct. 08, 1872T. Cooper, O.W. CutlerImprovement in Adjustable Slide-Wrenchesquick adjust wrenches
144,036Oct. 28, 1873E.S. ScriptureWrenchesquick adjust wrenches
171,333Dec. 21, 1875J.A. WhitePipe-Wrenchquick adjust wrenches
186,197Jan. 16, 1877P. Chapin, Sr.Improvements Pertaining to Adjustable Wrenchesscrew adjust wrenches
331,189Nov. 24, 1885J. Du ShaneRapid Transit Wrenchquick adjust wrenches
361,258Apr. 19, 1887S.J. BensonPipe Wrenchpipe wrenches
379,519Mar. 13, 1888T.F. KruegerPipe Wrenchpipe wrenches
389,899Sep. 25, 1888D.R. PorterPipe Wrenchquick adjust wrenches
426,223Apr. 22, 1890F. VirgienPipe Wrenchpipe wrenches
497,135May 09, 1893J.B. ShafferWrenchpipe and nut combination wrenches
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