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All Patents in class 172/752
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	FX-3,766	Oct. 14, 1823	J. Nash	Plough
	6,784X	Oct. 04, 1831	W. Black	Plough
	AI44	May 11, 1841	I. Snider	Self-sharpening plow
	5,526	Apr. 25, 1848	F.C. Smith	Plow-Colter
	5,529	Apr. 25, 1848	S. Hall	Plow

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