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Patents for Daniel Rowland
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	39,324	Jul. 21, 1863	S. Perry	Improvement in horse-powers
	39,325	Jul. 21, 1863	S. Perry	Improvement in horse-powers
	43,933	Aug. 23, 1864	W. Trapp	Improvement in machines for dressing heads to barrels
	44,504	Oct. 04, 1864	N.G. Barnum	Improved machine for filing saws

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