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Patents for Joseph E. Hoppen
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	211,096	Jan. 07, 1879	J.E. Hoppen	Improvement in grindstone-frames
	295,553	Mar. 25, 1884	J.E. Hoppen	Hanger for shafting
	553,676	Jan. 28, 1896	J.E. Hoppen	Shaft-hanger and lubricator therefor

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