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Patents for James Hart
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	7,768X	Sep. 17, 1833	J. Hart, W.V. Holladay	Cylinder and concave thrashing machine
	137,839	Apr. 15, 1873	J. Hart	Coffee Roasters
	144,788	Nov. 18, 1873	W. Hopkins, G.G. Picking	Steam-Cylinders and Piston-Valves

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