TREA

Willie B. Leonard

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rotary drive spool valve
    • Patent number 4,779,512
    • Issue date Oct 25, 1988
    • Willie B. Leonard
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Tractor and towed implement with elevation control system for imple...
    • Patent number 4,637,474
    • Issue date Jan 20, 1987
    • Willie B. Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulically actuated spool valve
    • Patent number 4,623,003
    • Issue date Nov 18, 1986
    • Willie B. Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Spool valve
    • Patent number 4,593,719
    • Issue date Jun 10, 1986
    • Willie B. Leonard
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fluidic repeater
    • Patent number 4,404,897
    • Issue date Sep 20, 1983
    • Willie B. Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Pump-motor power limiter and pressure relief
    • Patent number 4,355,506
    • Issue date Oct 26, 1982
    • Willie B. Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Fluidic repeater
    • Patent number 4,335,645
    • Issue date Jun 22, 1982
    • Willie B. Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Fluidic repeater
    • Patent number 4,283,990
    • Issue date Aug 18, 1981
    • Willie B. Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Fluidic repeater
    • Patent number 4,265,331
    • Issue date May 5, 1981
    • Willie B. Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Fluidic repeater
    • Patent number 4,254,689
    • Issue date Mar 10, 1981
    • Willie B. Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Fluidic repeater
    • Patent number 4,227,440
    • Issue date Oct 14, 1980
    • Willie B. Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Fluidic repeater
    • Patent number 4,152,971
    • Issue date May 8, 1979
    • Willie B. Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Fluidic repeater
    • Patent number 4,137,825
    • Issue date Feb 6, 1979
    • Willie B. Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Fluidic repeater
    • Patent number 4,094,229
    • Issue date Jun 13, 1978
    • Willie B. Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Fluidic repeater
    • Patent number 4,046,059
    • Issue date Sep 6, 1977
    • Willie Burt Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Fluidic repeater
    • Patent number 3,988,966
    • Issue date Nov 2, 1976
    • Willie Burt Leonard
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL