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All Patents in class 475/237
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
275,279	Apr. 03, 1883	A.O. Frick, W.H. Snyder	Traction-Engine	steam traction engines
306,403	Oct. 14, 1884	L.F. Dieter, O.W. Kelly	Traction Engine	traction engine propulsion components

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