All Patents in class 266/197


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All Patents in class 266/197
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	170	Apr. 20, 1837	G.E. Sellers	Improvement in concentrating-furnaces for smelting iron ores by the use of anthracite coal in which other kinds of fuel can be used
	172	Apr. 20, 1837	J. Barker	Blast Furnace