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Patents for Norman Sperry
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	371,387	Oct. 11, 1887	A.U. Smith	Countersink
	405,613	Jun. 18, 1889	N. Sperry	Package for Auger Bits
	762,099	Jun. 07, 1904	N. Sperry	Auger-Bit

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