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All Patents in class 137/625.25
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
8,480XOct. 30, 1834T.B. StillmanValves for steam enginessteam engine valves
6,128Feb. 20, 1849J. MulberyShort Slide-Valve by Chamfering Corners
197,076Nov. 13, 1877R.W. AitkenBalanced-Valvesteam engine valves
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