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Patents for B. M. Hartman
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
1,162,141	Nov. 30, 1915	G.B. De Arment	Tongs
1,176,745	Mar. 28, 1916	G.L. Swabb, W.M. Fawcett	Locomotive	steam locomotives

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