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All Patents in class 74/424.75
Patents 1 - 13 of 13
First set of recordsLast set of records
NumberDatePatenteeTitleType
57,282Aug. 21, 1866T. BowersImprovement in Wooden Screws
201,372Mar. 19, 1878J.B. WestImprovement in screw-driversspiral screwdrivers
470,176Mar. 08, 1892F.P. BurkhardtMechanical movementspiral screwdrivers
477,642Jun. 28, 1892C.E. BrunthaverBall-bearing for screw-nutsindustrial machine gearing
699,013Apr. 29, 1902J.M. RauhoffMechanism for converting motion
1,389,565Aug. 30, 1921J. JensenMachine elementmetal punching machines
1,409,844Mar. 14, 1922H. GartelmanValve Grinding Toolvalve grinding tools
1,897,666Feb. 14, 1933F.O. HoaglandMachine Tool Spindlemetalworking power transmission
1,989,611Jan. 29, 1935B. Sassen, A.H. DallWave Screwmetalworking power transmission
2,230,716Feb. 04, 1941F.W. CurtisTable Drive for Milling Machinesmilling machines
2,565,628Aug. 28, 1951P.F. RaviliousDifferential Screw Adjustmentmetalworking machines
3,121,340Feb. 18, 1964M.L. AnthonyResilient Nut for Averaging Out Lead Screw Errormetalworking machine mechanisms
3,789,896Feb. 05, 1974E. Cooke-YarboroughScrew drivers and like toolsspiral screwdrivers
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