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Patents for William A. Clark
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	RE3,516	Jun. 22, 1869	W.A. Clark	Improvement in expansive bits
	RE3,733	Nov. 16, 1869	W.A. Clark	Improvement in expansive bits
	RE4,668	Dec. 12, 1871	W.A. Clark	Improvement in expansive bits

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