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All Patents in class 148/528
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	18,327	Oct. 06, 1857	S. Darling	Manufacture of Metallic Squares
	RE2,869	Feb. 18, 1868	S. Darling	Improvement in the Manufacture of Metallic Squares

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