All Patents in class 122/36


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All Patents in class 122/36
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	39,530	Aug. 11, 1863	T.T. Prosser	Improved steam-boiler
	RE1,585	Dec. 01, 1863	T.T. Prosser	Improvement in steam-boilers