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Patents for William Joseph Grinden
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	577,653	Feb. 23, 1897	G. Amborn, Jr., W.J. Grinden	Chain Wrench
	577,654	Feb. 23, 1897	G. Amborn, Jr., W.J. Grinden	Chain Wrench
	CA-55,988	May 19, 1897	W.J. Grinden, G. Amborn	Chain Wrench
	CA-55,989	May 19, 1897	W.J. Grinden, G. Amborn	Chain Wrench
	GB-190,323,811	Jan. 14, 1904	W.J. Grinden	Improvements in Chain Pipe Vises

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