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Patents for Blackhawk Mfg. Co.
Patents 1 - 15 of 80
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NumberDatePatenteeTitleType
1,443,413Jan. 30, 1923J. JohnsonSocket Wrenchratchet wrenches
1,574,136Feb. 23, 1926H.E. Tautz, F.E. DionTool gripwrench handle components
1,685,503Sep. 25, 1928E.M. PfauserSocket Wrenchsocket wrenches
1,764,690Jun. 17, 1930E.M. PfauserTool Handletool handles
1,797,730Mar. 24, 1931E.M. PfauserSocket Attachment for Toolssocket wrenches
1,807,134May 26, 1931E.M. PfauserSocket Wrenchratchet wrenches
1,873,472Aug. 23, 1932E.M. PfauserSocket Wrenchsocket wrenches
1,881,029Oct. 04, 1932E.M. PfauserSocket Wrenchsocket wrenches
1,896,645Feb. 07, 1933E.M. PfauserCoupling For Socket Wrenchessocket wrenches
1,927,844Sep. 26, 1933E.M. PfauserSocket Wrenchwrench handle components
1,936,640Nov. 28, 1933E.M. PfauserReversible Friction Clutchratchet wrenches
1,941,565Jan. 02, 1934S. MandlSocket Wrenchwrenches
RE19,093Feb. 27, 1934E.M. PfauserCoupling For Socket Wrenchessocket wrenches
RE19,287Aug. 21, 1934E.M. PfauserCoupling For Socket Wrenchessocket wrenches
1,982,008Nov. 27, 1934E.M. Pfauser, S. MandlCouplingsocket wrenches
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