TREA

David A. Gray

Follow

Person

  • Tyler, TX, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Heat exchange coil and method of making
    • Patent number 4,535,838
    • Issue date Aug 20, 1985
    • American Standard Inc.
    • David A. Gray
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Reversible compressor heat pump
    • Patent number 4,367,638
    • Issue date Jan 11, 1983
    • General Electric Company
    • David A. Gray
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...