TREA

James F. Langdon

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  • Oconomowoc, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method and system for call tracing
    • Patent number 7,796,746
    • Issue date Sep 14, 2010
    • AT&T Intellectual Property I, L.P.
    • Paul W. Fellner
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Method and system for call tracing
    • Patent number 7,221,751
    • Issue date May 22, 2007
    • Ameritech Services, Inc.
    • Paul W. Fellner
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Method and system for call tracing
    • Patent number 6,925,164
    • Issue date Aug 2, 2005
    • Ameritech Services, Inc.
    • Paul W. Fellner
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Method and system for call tracing
    • Patent number 6,718,031
    • Issue date Apr 6, 2004
    • Ameritech Services, Inc.
    • Paul W. Fellner
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Method and system for call tracing
    • Patent number 6,404,882
    • Issue date Jun 11, 2002
    • Ameritech Services, Inc.
    • Paul W. Fellner
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Method and system for call tracing
    • Patent number 6,243,458
    • Issue date Jun 5, 2001
    • Ameritech Services, Inc.
    • Paul W. Fellner
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Method and system for call tracing
    • Patent number 5,999,616
    • Issue date Dec 7, 1999
    • Ameritech Services, Inc.
    • Paul W. Fellner
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    Method and system for call tracing
    • Publication number 20090147927
    • Publication date Jun 11, 2009
    • Ameritech Services, Inc.
    • Paul W. Fellner
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Method and system for call tracing
    • Publication number 20050226402
    • Publication date Oct 13, 2005
    • Ameritech Services, Inc.
    • Paul W. Fellner
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Method and system for call tracing
    • Publication number 20040146155
    • Publication date Jul 29, 2004
    • Ameritech Services, Inc.
    • Paul W. Fellner
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Method and system for call tracing
    • Publication number 20030007607
    • Publication date Jan 9, 2003
    • Paul W. Fellner
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Method and system for call tracing
    • Publication number 20020041672
    • Publication date Apr 11, 2002
    • Ameritech Services Inc.
    • Paul W. Fellner
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE