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All Patents in class 91/157
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
359,707Mar. 22, 1887W. BrownValve for Steam Enginessteam engine valves
471,253Mar. 22, 1892C.T. Noyes, T.W. HeintzelmanValve Gear for Compound Enginessteam engine valve gear
2,572,652Oct. 23, 1951H.G. MuellerMultiple Expansion Steam Enginesteam engines
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