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All Patents in class 92/67
Patents 1 - 3 of 3
First set of recordsLast set of records
103,212May 17, 1870H.E. LongRotary Steam Enginesteam engines
128,062Jun. 18, 1872C.W. PattenImprovment in Rotary Steam-Enginesrotary steam engines
129,635Jul. 16, 1872W.I. WeedImprovment in Rotary Enginesrotary steam engines
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