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Patents for H. J. Sprague
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	139,177	May 20, 1873	G.P. Moloney	Improvment in Pipe Tongs
	140,561	Jul. 01, 1873	G. Warsop	Pipe Wrenches
	143,908	Oct. 21, 1873	D.D. Ingram	Improved Pipe-Wrench

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