All Patents in class 475/224


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All Patents in class 475/224
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
277,784	May 15, 1883	W.H. Snyder, A.O. Frick, I.G. Rider	Traction-engine	steam traction engines
2,742,797	Apr. 24, 1956	J.A. Perham	Multi-spindle portable power-operated tool