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Patents for William M. Gray
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
71,871Dec. 10, 1867W.M. GrayGray's Patent Bed Wrenchratchet wrenches
184,775Nov. 28, 1876W.M. GrayImprovement in Bed-Key Hammerswrench combination tools
222,102Nov. 25, 1879W.M. Gray, D.T. ThompsonImprovement in drag-sawing machinesdrag saws
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