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Patents for W. A. Graham
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
129,557Jul. 16, 1872J. Hawkes, T. HawkesImprovement in miter-boxesmiter boxes
131,828Oct. 01, 1872A. PitcherImprovement in Rotary-Wrenchesratchet wrenches
135,164Jan. 21, 1873H. SillmanImprovement in band-saw gangsband sawmills
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