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Patents for C. Leffingwell
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	56,145	Jul. 03, 1866	C. Leffingwell	Improvement in head-blocks for sawmills
	93,724	Aug. 17, 1869	C. Leffingwell	Improvement in head-blocks for sawmills
	97,302	Nov. 30, 1869	C. Leffingwell	Improvement in head-blocks for sawmills

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