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All Patents in class 180/8.7
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
210,492	Dec. 03, 1878	R. Broja	Traction-Engine	traction engine propulsion components
334,333	Jan. 12, 1886	B.S. Benson	Traction Engine	traction engine tracks

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