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All Patents of Type: screws
Patents 1 - 12 of 12
First set of recordsLast set of records
NumberDatePatenteeTitleType
5,910XApr. 10, 1830R. WhitneyWedge screwsscrews
4,704Aug. 20, 1846T.J. SloanImprovement in wood-screwsscrews
8,456Oct. 21, 1851T.J. SloanMaking Screwsmaterial cutting machines
NS-27Feb. 04, 1857G.W. FreemanReversed screwscrews
38,141Apr. 14, 1863J.A. AyresImprovement in Screwsscrews
RE2,182Mar. 06, 1866T.J. SloanMachine for Shaving and Nicking Screwsscrews
135,388Jan. 28, 1873T.M. TuckerCasting Centers on Cast Iron Screwsscrews
188,668Mar. 20, 1877J. PleukharpImprovement in screwsscrews
306,492Oct. 14, 1884G.W. JackmanImprovement in Screwsscrews
479,175Jul. 19, 1892C.D. RogersWood Screw and Method of Making the Samescrews
877,157Jan. 21, 1908W.G. AllenManufacture of wood-screwsscrews
3,501,993Mar. 24, 1970H.F. SwensonSetscrew with Rotatable Plastic Endscrews
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