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Douglas L. Worf

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  • Cary, NC, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Heat exchange system
    • Patent number 4,517,958
    • Issue date May 21, 1985
    • Douglas L. Worf
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Heat exchange system
    • Patent number 4,408,596
    • Issue date Oct 11, 1983
    • Douglas L. Worf
    • F24 - HEATING RANGES VENTILATING