TREA

S Devendra K. Verma

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  • Middletown, NJ, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Call screening in a public telephone station
    • Patent number 4,794,642
    • Issue date Dec 27, 1988
    • American Telephone and Telegraph Company, AT&T Bell Laboratories
    • Mohammad A. Arbabzadah
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Fraud prevention in a public telephone station
    • Patent number 4,782,516
    • Issue date Nov 1, 1988
    • American Telephone & Telegraph Company; AT&T Information Systems Inc.
    • Richard L. Maybach
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE