Patents for Henry H. Gridley


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Patents for Henry H. Gridley
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	54,330	May 01, 1866	H.H. Gridley	Improvement in head-blocks to sawmills
	75,678	Mar. 17, 1868	H.H. Gridley	Improvement in sawmills
	106,932	Aug. 30, 1870	H.H. Gridley	Improvement in head-block