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Patents for David D. Erwin
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	141,736	Aug. 12, 1873	E. Tarrant	Improvement in log-turners
	145,031	Nov. 25, 1873	J. Torrent	Improvement in saw-mill dogs
	RE9,291	Jul. 13, 1880	J. Torrent	Log-turner

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