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Patents for Dan Rowlance
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	42,990	May 31, 1864	D.A. Dickinson	Improvement in machines for trimming the bowls of tobacco-pipes
	42,991	May 31, 1864	D.A. Dickinson	Improvement in machines for making tobacco-pipes

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