Willis Oil Tool Co.

Organization

  • Long Beach, CA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Pig ball transfer unit

    • Patent number 4,199,834
    • Issue date Apr 29, 1980
    • Willis Oil Tool Co.
    • John D. Muchow
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    Automatic reset pilot valve

    • Patent number 4,116,215
    • Issue date Sep 26, 1978
    • Willis Oil Tool Co.
    • John D. Muchow
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Actuator pilot for fluid pressure monitoring safety system

    • Patent number 4,026,326
    • Issue date May 31, 1977
    • Willis Oil Tool Co.
    • Richard E. Wells
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Device and method for launching and/or retrieving pipeline scrapers

    • Patent number 4,016,621
    • Issue date Apr 12, 1977
    • Willis Oil Tool Co.
    • Maurice Slegers
    • B08 - CLEANING
  • Information Patent Grant

    Fluid pressure monitoring safety system

    • Patent number 4,017,053
    • Issue date Apr 12, 1977
    • Willis Oil Tool Co.
    • Richard E. Wells
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Means to reset an actuator pilot valve

    • Patent number 3,977,438
    • Issue date Aug 31, 1976
    • Willis Oil Tool Co.
    • John D. Muchow
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Safety shut-off valve

    • Patent number 3,958,592
    • Issue date May 25, 1976
    • Willis Oil Tool Co.
    • Richard E. Wells
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

  • Information Trademark

    73119074 - W

    • Serial number 73119074
    • Registration number 1175775
    • Filing date Mar 14, 1977
    • Willis Oil Tool Co.
    • 6 - Common metals and their alloys