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