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Patents for Powell Macy
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	270,744	Jan. 16, 1883	W.A. Clarke	Cut-off valve
	272,648	Feb. 20, 1883	W.A. Clarke	Reversing-gear for steam-engines
	278,223	May 22, 1883	W.A. Clarke	Water-gage

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