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All Patents of Type: screwdrivers
Patents 1 - 15 of 480
First set of recordsNext set of recordsLast set of records
9,457Dec. 07, 1852J.W. SwitzerScrewdriverscrewdrivers
11,122Jun. 20, 1854G.W. GriswoldDouble-Ratchet Tool-Handletool holders
18,206Sep. 15, 1857D.A. LamsonCombination Tool for Mechanics and Otherscombination tools
19,162Jan. 19, 1858G.H. TalbotRatchet Movement for Screw Driversratcheting screwdrivers
20,619Jun. 22, 1858O. BondHandle for Screw-Driversratcheting screwdrivers
35,337May 20, 1862J. ThompsonScrew Driverscrewdrivers
35,715Jun. 24, 1862J.A. ThayerCombination Toolcombination tools
37,920Mar. 17, 1863T.J. PennyImproved Combined Wrench, Scraper and Screwdriverwrench combination tools
39,206Jul. 14, 1863J.A. AyresImproved Screwdriverscrewdriver blades
43,398Jul. 05, 1864G.H. GardnerImproved Pocket Knifecombination tools
45,854Jan. 10, 1865G. ParrImprovement in Mode of Manufacturing Screw Driversscrewdriver blades
47,102Apr. 04, 1865D.F. HartfordScrewdriver and Tweezersclockmaker
50,021Sep. 19, 1865J.S. McCurdyImprovement in Screw-Driversscrewdriver blades
50,328Oct. 10, 1865W.G. BonwillImprovement in Screw-Driversscrewdriver blades
56,191Jul. 10, 1866C.G. Dodge, Jr.Combined Hammer and Screw-Drivercombination tools
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