TREA

Donald A. Lee

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  • Urbana, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Computer-based education system
    • Patent number 4,793,813
    • Issue date Dec 27, 1988
    • The Board of Trustees of the University of Illinois
    • David L. Bitzer
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Multiple access communication on a CATV reverse channel
    • Patent number 4,633,462
    • Issue date Dec 30, 1986
    • The Board of Trustees of the University of Illinois
    • John E. Stifle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE