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All Patents in class 212/223
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	24,912	Jul. 26, 1859	J.Y. Parce	Hoisting Crane
	233,159	Oct. 12, 1880	J.B. Mooney	Steamboat-staging
	259,685	Jun. 20, 1882	J.B. Mooney, J.L. Haven	Staging for steamboats
	715,338	Dec. 09, 1902	H.N. Covell, C.A. Baechtold	Swinging-gear for derrick engine

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