TREA

Robert C. deKieffer

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  • Boulder, CO, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Duct joining system
    • Patent number 6,279,967
    • Issue date Aug 28, 2001
    • John P. Proctor
    • F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

  • Information Patent Application

    Duct joining system
    • Publication number 20010026048
    • Publication date Oct 4, 2001
    • John P. Proctor
    • F24 - HEATING RANGES VENTILATING