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All Patents in class 172/333
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	18,530	Oct. 27, 1857	N. Whitehall	Improvement in Cultivators
	79,598	Jul. 07, 1868	N.A. Rand	Cultivator
	160,142	Feb. 23, 1875	J. Behel	Improvement in cultivators

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