TREA

David F. Niesman

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  • Buffalo Grove, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    LAN telephone system
    • Patent number 6,735,208
    • Issue date May 11, 2004
    • Sphere Communications, Inc.
    • Ernst B. Riemann
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    ATM LAN telephone system
    • Patent number 5,892,764
    • Issue date Apr 6, 1999
    • Sphere Communications Inc.
    • Ernst B. Riemann
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    LAN telephone system
    • Publication number 20050174990
    • Publication date Aug 11, 2005
    • Sphere Communications, Inc.
    • Ernst B. Riemann
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Lan telephone system
    • Publication number 20030012185
    • Publication date Jan 16, 2003
    • Sphere Communications
    • Ernst B. Riemann
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE