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All Patents in class 470/181
Patents 1 - 15 of 26
First set of recordsNext set of recordsLast set of records
9,729May 17, 1853A.H. LongleyImprovement in Machines for Cutting Wooden Screwswood threading machines
407,537Jul. 23, 1889G. LandmannMachine for Making Screwsscrew machines
583,883Jun. 08, 1897G.R. BaldwinTapping Machinetapping machines
610,208Sep. 06, 1898H.A. TuttleTapping-machinetapping machines
688,653Dec. 10, 1901F. LambertTool-operating machinedrill presses
742,291Oct. 27, 1903L.H. ColburnUpright Tapping and Boring Machinedrill presses
832,221Oct. 02, 1906H.A. TuttleTapping-machinetapping machines
913,417Feb. 23, 1909R. MilneGearingmetalworking power transmission
1,254,933Jan. 29, 1918A. Abbey, E. PeuchDrilling, Screw Cutting , and Other Similar Machinedrill press chucks
1,495,080May 20, 1924D.C. KlausmeyerSelf Indicating Variable Spindle Drivemetalworking variable speed mechanisms
1,549,178Aug. 11, 1925B.S. BishopTapping machinedrilling and boring
1,582,669Apr. 27, 1926H.E. DurkeeScrew Thread Cutting Means for Bench Lathesscrewcutting lathes
1,752,422Apr. 01, 1930A.G. DeckerPortable electric tapperhandheld power tool accessories
1,786,148Dec. 23, 1930E.P. Bullard, Jr.Station Type Drilling and Tapping Machinemultiple spindle drill presses
1,796,790Mar. 17, 1931E.S. IngrahamAttachment for automatic screw machines
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