All Patents in class 254/328


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All Patents in class 254/328
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	129,984	Jul. 30, 1872	D.C. Pierce	Improvement in Traction-Engines
	320,743	Jun. 23, 1885	A.C. Ames	Traction Engine
	812,137	Feb. 06, 1906	W.S. Kelley	Traction Engine