TREA

John E. Trombly

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  • Winchester, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Audio and full duplex digital data carrier system
    • Patent number 4,330,687
    • Issue date May 18, 1982
    • Teltone Corporation
    • John D. Foulkes
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Digital data transmission system
    • Patent number 4,302,629
    • Issue date Nov 24, 1981
    • Teltone Corporation
    • John D. Foulkes
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Lock system
    • Patent number 4,207,555
    • Issue date Jun 10, 1980
    • The Eastern Company
    • John E. Trombly
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    Electromagnetically coupled battery charger
    • Patent number 4,031,449
    • Issue date Jun 21, 1977
    • Arthur D. Little, Inc.
    • John E. Trombly
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Keyhole-less electronic lock
    • Patent number 4,031,434
    • Issue date Jun 21, 1977
    • The Eastern Company
    • Robert Richard Perron
    • G07 - CHECKING-DEVICES