All Patents in class 277/482


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All Patents in class 277/482
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	31,971	Apr. 09, 1861	J.O. Haight	Piston of steam-engines
	61,728	Feb. 05, 1867	T.A. Goff	Improvement in pistons for steam engines
	225,555	Mar. 16, 1880	E.M. Birdsall	Piston for Steam Engines