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Patents for Thompson Grinder Co.
Patents 46 - 56 of 56
First set of recordsPrevious set of recordsLast set of records
NumberDatePatenteeTitleType
2,682,748Jul. 06, 1954W. ErnstRestrictor Valve for a Servomotor Circuithydraulic apparatus
2,723,505Nov. 15, 1955F.G. KrafftMethod and Apparatus for Surface Finishingsurface grinders
2,785,511Mar. 19, 1957J.C. WilsonGrinding Machine and Method of Operationsurface grinders
2,921,439Jan. 19, 1960F.G. KrafftPump Controlhydraulic apparatus
2,932,985Apr. 19, 1960W.G. BaldenhoferLong Piston Rods and Motor Embodying the Samehydraulic apparatus
2,985,109May 23, 1961W. ErnstHydraulic Pumphydraulic apparatus
3,011,449Dec. 05, 1961W. ErnstVaned Hydraulic Unithydraulic apparatus
3,015,212Jan. 02, 1962W. Ernst, F.G. KrafftPump Controlhydraulic apparatus
3,047,987Aug. 07, 1962F.G. Krafft, W.G. BaldenhoferApparatus for Submerged Grindingmetalworking machine mechanisms
3,231,320Jan. 25, 1966F.G. KrafftHydrostatic Lubricationmetalworking machine lubrication
3,305,974Feb. 28, 1967J.C. WilsonGrinding Machine
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