TREA

David Silver

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  • Newtonville, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Multi-ring telephone method and system
    • Patent number 5,802,160
    • Issue date Sep 1, 1998
    • Pilgrim Telephone, Inc.
    • Stanley Kugell
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone billing method
    • Patent number 5,146,491
    • Issue date Sep 8, 1992
    • Pilgrim Telephone, Inc.
    • David Silver
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    TELEPHONE BILLING METHOD
    • Publication number 20040022378
    • Publication date Feb 5, 2004
    • STANLEY KUGELL
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE