All Patents in class 70/316


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All Patents in class 70/316
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	AI222	Mar. 01, 1859	H.W. Covert	Revolving tumbler for permutation lock
	68,922	Sep. 17, 1867	S. Wheeler	Improvement in permutation locks