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Patents for H. A. Spangler
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	RE5,646	Nov. 04, 1873	L. Morrison, A.G. Harms	Improvement in saw-hangings
	RE5,647	Nov. 04, 1873	L. Morrison, A.G. Harms	Improvement in saw-hangings

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