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Patents for Donn Twitchell
Patents 1 - 15 of 23
First set of recordsNext set of recordsLast set of records
251,635Dec. 27, 1881H.W. ReedImproved Monkey Wrenchquick adjust wrenches
287,193Oct. 23, 1883J.L. TaylorPipe Wrenchpipe wrenches
304,520Sep. 02, 1884G.B. GableCombination Toolcombination tools
308,969Dec. 09, 1884J. LussierWrenchangle adjustable wrenches
339,813Apr. 13, 1886P. Ryan, J. RyanWrenchwrench handle components
342,119May 18, 1886J.W. MillerRatchet Wrench and Drillratchet wrenches
347,580Aug. 17, 1886J.B. DeanWrenchquick adjust wrenches
350,935Oct. 19, 1886J.G. LeslieWrenchquick adjust wrenches
363,998May 31, 1887G.P. EvelynSpirit-Levelinclinometers
409,921Aug. 27, 1889T.E. CassidyCombined Surface, Scratch, and Depth-Gagesurface gauges
415,923Nov. 26, 1889J.L. PainterToolcombination tools
419,254Jan. 14, 1890W.S. HoskinsImprovements in Monkey Wrenchesquick adjust wrenches
450,892Apr. 21, 1891W.H. PotterScriberscribes
456,830Jul. 28, 1891M. MartinMachine Wrenchtire bolt wrenches
456,860Jul. 28, 1891H.R. SpencerNipple Holder
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