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All Patents in class 91/420
Patents 1 - 9 of 9
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,285,475Nov. 19, 1918W. TurnwaldAutomatic exhaust-valvesteam engine valves
1,892,568Dec. 27, 1932W. ErnstSurge Valve for Hydraulic Presses or the Like hydraulic presses
2,077,894Apr. 20, 1937I. PatrickSurge control valve for hydraulic presseshydraulic metalworking presses
2,286,880Jun. 16, 1942W.A. TrautHydraulic Control System
2,444,474Jul. 06, 1948B.R. PurvinFluid pressure device
2,501,387Mar. 21, 1950G. HaumannVeneer latheveneer machines
2,730,074Jan. 10, 1956W. ErnstServo-motor valvehydraulic apparatus
2,951,342Sep. 06, 1960H.E. Boyer, N.V. Gusching, W.H. Ulman, D.E. LundeenElectro-hydraulic servo system
6,988,363Jan. 24, 2006M. BitterHydraulic Active Boom Suspension for a Telehandlertelehandlers and lifts
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