TREA

John D. Whittier

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  • Lakewood, CO, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Acid/slurry governor seal assembly for centrifugal pumps
    • Patent number 5,667,356
    • Issue date Sep 16, 1997
    • A. R. Wilfley and Sons, Inc.
    • John D. Whittier
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pump sealing apparatus
    • Patent number 4,915,579
    • Issue date Apr 10, 1990
    • A. R. Wilfley and Sons, Inc.
    • John D. Whittier
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...