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All Patents in class 137/625.25
Patents 1 - 13 of 13
First set of recordsLast set of records
NumberDatePatenteeTitleType
8,480XOct. 30, 1834T.B. StillmanValves for steam enginessteam engine valves
4,542May 28, 1846W.H. Baker, H.R. WorthingtonBalancing valves of steam-enginessteam engine valves
6,128Feb. 20, 1849J. MulberyShort Slide-Valve by Chamfering Corners
35,068Apr. 29, 1862J.F. AllenSteam-enginesteam engines
35,069Apr. 29, 1862J.F. AllenImprovement in slide-valves for steam-enginessteam engine valve gear
95,868Oct. 19, 1869J.F. AllenImprovement in steam-engine slide-valvessteam engine valves
147,993Feb. 24, 1874E.D. SpeerBalanced Slide Valvesteam engine valves
197,076Nov. 13, 1877R.W. AitkenBalanced-Valvesteam engine valves
314,120Mar. 17, 1885C.M. GiddingsSlide Valvesteam engine valves
331,018Nov. 24, 1885D.A. WoodburyBalanced Slide Valvesteam engine valves
1,819,703Aug. 18, 1931W. ErnstValve hydraulic motor controls
2,363,111Nov. 21, 1944R.D. BennettHydraulic valvehydraulic apparatus
2,526,361Oct. 17, 1950C. JohnsonControl valve for fluid servomotorsmilling machine accessories
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