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Patents for Benjamin F. Thurston
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
54,090Apr. 24, 1866G.H. Babcock, S. Wilcox, Jr.Improvement in cut-off valvessteam engine valves
66,819Jul. 16, 1867C.H. FieldRosette enginemetal engraving machines
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