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All Patents in class 165/DIG.314
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	100,241	Feb. 22, 1870	B.F. Sturtevant	Air Heater and Steam Condenser
	100,242	Feb. 22, 1870	B.F. Sturtevant	Air Heater and Steam Condenser

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