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David W. Petr

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  • Red Bank, NJ, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Multimode data communication system
    • Patent number 4,607,364
    • Issue date Aug 19, 1986
    • Jeffrey Neumann
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Digital code converter
    • Patent number 4,518,950
    • Issue date May 21, 1985
    • AT&T Bell Laboratories
    • David W. Petr
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Adaptive differential PCM coding
    • Patent number 4,437,087
    • Issue date Mar 13, 1984
    • Bell Telephone Laboratories, Incorporated
    • David W. Petr
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE