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Patents for H. J. Bernhard
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
281,920Jul. 24, 1883W.L. ParmeleeBit-stockbraces
338,326Mar. 23, 1886H.M. WilsonPipe Wrenchpipe tongs
340,516Apr. 20, 1886W. MostonImprovement In Pipe-Tongspipe tongs
341,503May 11, 1886A.P. QuigleyImprovements in Monkey-Wrenchesquick adjust wrenches
422,879Mar. 04, 1890W. ForgieImprovements In Automatic Wrench for Coupling and Uncoupling the Tools or Drill-Rods of Well-Boring Apparatus wrenches
461,894Oct. 27, 1891E. CookPipe Wrenchpipe wrenches
465,626Dec. 22, 1891J. WatermanConvertible Drill and Wrenchwrench combination tools
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