All Patents in class 122/44.1


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All Patents in class 122/44.1
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	6,387X	Feb. 18, 1831	L. Disbrow	Compound furnace steam boiler
	6,387	Apr. 24, 1849	J. Burdge, W.F. Converse	Machinery for Cutting Screws on Rails for Bedsteads
	616,380	Dec. 20, 1898	C.G. Wernicke	Boiler