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Patents Granted on 1871-02-28
Patents 1 - 15 of 18
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NumberDatePatenteeTitleType
RE4,279Feb. 28, 1871P. EstesImprovement in Steam Enginessteam engines
112,108Feb. 28, 1871E. BeachWrenchquick adjust wrenches
112,109Feb. 28, 1871E. BeachWrenchquick adjust wrenches
112,114Feb. 28, 1871N.H. BoltonMachine for sawing waste-blocks from shingle machine into shinglesshingle machines
112,115Feb. 28, 1871T.V. BoydenTwist Drill Bittwist drill bits
112,119Feb. 28, 1871G.O. BuckleySelf Centering Lathe Chuckmetal lathe chucks
112,135Feb. 28, 1871G.W. FittsTraction Enginesteam traction engines
112,143Feb. 28, 1871H.L. HildrethImprovement in Screw Driversratcheting screwdrivers
112,156Feb. 28, 1871G.W. LombardImprovement in sawing-machinesannular saws
112,176Feb. 28, 1871F.H. PalmerImprovement in countersinkscountersinks
112,205Feb. 28, 1871S.F. Roby, M.P. Jacobs, V. ApplegateImprovement in Coopers' Crozecrozes
112,218Feb. 28, 1871W. Brown, J.R. BrownImprovement in Carpenters' Planes
112,227Feb. 28, 1871H. DisstonImprovement in sawssaw teeth
112,228Feb. 28, 1871W.H. Soley, W. DowningChain mortising machinemortising machines
112,238Feb. 28, 1871E.B. GiffordImprovement in Wrenches and Oilersaxle nut wrench combination tools
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