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All Patents in class 165/DIG.314
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
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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