TREA

Sperry Rand Limited

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  • London, EN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic valves and hydraulic systems
    • Patent number 4,062,374
    • Issue date Dec 13, 1977
    • Sperry Rand Limited
    • John Stephen Marshall
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic systems
    • Patent number RE29329
    • Issue date Aug 2, 1977
    • Sperry Rand Limited
    • Ronald Bernard Walters
    • 091 - Motors: expansible chamber type
  • Information Patent Grant

    Hydraulic actuator controls
    • Patent number 4,031,813
    • Issue date Jun 28, 1977
    • Sperry Rand Limited
    • Ronald Bernard Walters
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Pressure control in hydraulic systems
    • Patent number 3,957,396
    • Issue date May 18, 1976
    • Sperry Rand Limited
    • John Edwin Cooper
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Flow sensors
    • Patent number 3,953,819
    • Issue date Apr 27, 1976
    • Sperry Rand Limited
    • Donald Keerie
    • G01 - MEASURING TESTING