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Patents for Pittsburgh Malleable Iron Company
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
870,781Nov. 12, 1907G. HecklingCRAFT roller-jaw pipe wrenchpipe wrenches
1,593,588Jul. 27, 1926F. MooreWrenchpipe wrenches
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