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Patents for Walworth Mfg. Co.
Patents 1 - 13 of 13
First set of recordsLast set of records
NumberDatePatenteeTitleType
47,543May 02, 1865B.S. HillDie for Cutting Male-Screw Threadstaps and dies
95,744Oct. 12, 1869D.C. StillsonImprovement in Pipe-Wrenchespipe wrenches
126,161Apr. 30, 1872D.C. StillsonImprovement in Pipe-Wrenchespipe wrenches
184,686Nov. 21, 1876J. MillerMachines for Tapping Pipes Under Pressureplumber
262,263Aug. 08, 1882C.C. WalworthImprovement in Pipe-Wrenchespipe wrenches
580,685Apr. 13, 1897O.B. HallPipe Wrenchpipe wrenches
871,436Nov. 19, 1907R. ParmeleePipe Wrenchchain and strap wrenches
D44,125Jun. 03, 1913H.C. EarleWrench Barwrench handle components
1,271,734Jul. 09, 1918T.W. LittleWrenchpipe wrenches
1,275,334Aug. 13, 1918B. WattsPipe Wrenchquick adjust wrenches
1,711,083Apr. 30, 1929A.O. BrungardtProcess of Making Wrenchespipe wrenches
1,862,001Jun. 07, 1932A.O. BrungardtProcess of Making Wrencheswrench handle components
1,862,002Jun. 07, 1932A.O. BrungardtPipe Wrenchpipe wrenches
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