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Patents for Blackhawk Mfg. Co.
Patents 61 - 75 of 80
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NumberDatePatenteeTitleType
2,459,080Jan. 11, 1949W. KilliusMechanic's Work Holding Table Furnished with Adjustable Work-Supporting Arms
2,475,040Jul. 05, 1949S. MandlRam
2,499,968Mar. 07, 1950E.M. PfauserPneumatic-Hydraulic Pressure Converter
2,520,652Aug. 29, 1950S. Mandl, E.M. PfauserAdjustable Tool Handlewrench handle components
2,525,922Oct. 17, 1950S. MandlRotary-Reciprocating Motion Converter
2,625,796Jan. 20, 1953W.A. TrautMultispeed Hydraulic Power Device
2,687,056Aug. 24, 1954W.M. FoorOpen-End Wrench Having Wedgy Jaws and a Recessed Concave Bight Wallnut wrenches
D181,071Sep. 24, 1957W.L. Vallee, I.V. StovernVehicle Jack
2,814,540Nov. 26, 1957H.I. SoutherwickPiston Packing
2,824,381Feb. 25, 1958R.J. TraupmannPre-Indicator of Pipe Positions and Bendspipe and tube benders
2,867,087Jan. 06, 1959C.E. HoltHydraulic Valve for Pressure Applying Units
2,867,261Jan. 06, 1959R.J. TraupmannPipe Bender with Bend Indicator Meanspipe and tube benders
2,867,409Jan. 06, 1959H.I. SoutherwickService Jack
2,895,712Jul. 21, 1959W.L. Vallee, I.V. StovernAdjustable Load Support
2,909,358Oct. 20, 1959H.I. SoutherwickPortable Jack Assemblage
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