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Patents for James Leffel
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	4,056	May 21, 1845	J. Leffel	Improvement in water-wheels
	34,150	Jan. 14, 1862	J. Leffel	Improved water-wheel
	RE1,791	Oct. 11, 1864	J. Leffel	Improvement in water-wheels
	RE1,792	Oct. 11, 1864	J. Leffel	Improvement in cases for water-wheels

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