TREA

Kenneth R. Havard

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Traveling valve for sucker rod pumps
    • Patent number 6,746,221
    • Issue date Jun 8, 2004
    • Kenneth Havard
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Traveling valve for sucker rod pump
    • Patent number 5,356,114
    • Issue date Oct 18, 1994
    • Mash Oil Tools, Inc.
    • Kenneth R. Havard
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...