TREA

Oil Extractors, Inc.

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  • Fort Worth, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Standing valve assembly for an oil well pump
    • Patent number 4,243,361
    • Issue date Jan 6, 1981
    • Oil Extractors, Inc.
    • Henry C. Groff
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

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