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All Patents in class 122/155.3
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	10,636	Mar. 14, 1854	E.G. Hastings	Machine for dressing stone
	144,499	Nov. 11, 1873	A. Betts	Devices for Changing the Speed of Machinery
	172,557	Jan. 25, 1876	F. Collignon	Steam Boiler

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