TREA

Darrel D. Hillman

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  • Mineral Wells, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ammonia pump
    • Patent number 5,616,012
    • Issue date Apr 1, 1997
    • Darrel D. Hillman
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Crankshaft driven reciprocating piston pump having plural guide rods
    • Patent number 5,547,352
    • Issue date Aug 20, 1996
    • Darrel D. Hillman
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...