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Patents for Henry Houghton
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
558,874Apr. 21, 1896J. GrannisAxle Nut Wrenchaxle nut wrenches
559,559May 05, 1896J.E. WorthenCircumferential Dividersdividers
605,441Jun. 07, 1898A.E. BrockettPipe Wrenchpipe wrenches
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