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All Patents in class 212/71
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	8,059X	Mar. 10, 1834	J. Drummond	Hoisting machine
	9,389X	Feb. 12, 1836	E. Marsh	Crane
	424,025	Mar. 25, 1890	A.H. Richardson	Machine for sharpening cutting-tools

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