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Patents for H. K. Porter
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	94,504	Sep. 07, 1869	N.D. Beecroft, A.F. Noyes	Hand Weeder
	101,730	Apr. 12, 1870	E.F. Harrington	Improvement in cork-cutting machines

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