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Patents for William M. Gray
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	71,871	Dec. 10, 1867	W.M. Gray	Gray's Patent Bed Wrench
	184,775	Nov. 28, 1876	W.M. Gray	Improvement in Bed-Key Hammers
	222,102	Nov. 25, 1879	W.M. Gray, D.T. Thompson	Improvement in drag-sawing machines

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