TREA

Donald C. Welch

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  • La Crosse, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Heat exchanger
    • Patent number D276933
    • Issue date Dec 25, 1984
    • The Trane Company
    • Donald C. Welch
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Heat exchanger tube circuits
    • Patent number 4,446,915
    • Issue date May 8, 1984
    • The Trane Company
    • Donald C. Welch
    • F28 - HEAT EXCHANGE IN GENERAL