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All Patents in class 172/490
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	26,422	Dec. 13, 1859	J.W. Fawkes	Steam-Plow
	49,938	Sep. 12, 1865	L.B. Walker	Improvement in cultivators
	1,006,752	Oct. 24, 1911	J.B. Hill	Soil-Pulverizer
	1,202,947	Oct. 31, 1916	J. Wolf	Traction Plow

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