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Patents for Gray Brothers
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
12,510Mar. 13, 1855J. HydeImprovement in Screw-Wrenchesquick adjust wrenches
13,617Oct. 02, 1855J. HydeScrew-Wrenchquick adjust wrenches
71,871Dec. 10, 1867W.M. GrayGray's Patent Bed Wrenchratchet wrenches
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