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Patents for John H. McGowan
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	79,769	Jul. 07, 1868	J.H. McGowan	Tobacco Press
	119,039	Sep. 19, 1871	D.B. Caldwell, J.H. McGowan	Steam Engine
	143,292	Sep. 30, 1873	D.B. Caldwell, J.H. McGowan	Crank-Connection for Steam Engines

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