TREA

Analog and Digital Systems, Inc.

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Organization

  • Wilmington, MA, US
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Remote control devices
    • Patent number 4,745,397
    • Issue date May 17, 1988
    • Analog and Digital Systems, Inc.
    • Norbert Lagerbauer
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Audio delay system
    • Patent number 4,730,272
    • Issue date Mar 8, 1988
    • Analog and Digital Systems, Inc.
    • Daniel T. Sullivan
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Generating narrowly-separated variable-frequency clock signals
    • Patent number 4,682,362
    • Issue date Jul 21, 1987
    • Analog and Digital Systems, Inc.
    • Richard E. DeFreitas
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Digital encoding circuitry
    • Patent number 4,612,654
    • Issue date Sep 16, 1986
    • Analog and Digital Systems, Inc.
    • Richard E. DeFreitas
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Circuitry for generating reference signal for delta encoding systems
    • Patent number RE31976
    • Issue date Aug 27, 1985
    • Analog and Digital Systems, Inc.
    • Richard E. DeFreitas
    • 332 - Modulators
  • Information Patent Grant

    Enclosed magnet loudspeaker
    • Patent number 4,507,800
    • Issue date Mar 26, 1985
    • Analog and Digital Systems, Inc.
    • Michael L. Kelly
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Reproducing multichannel sound
    • Patent number 4,303,800
    • Issue date Dec 1, 1981
    • Analog and Digital Systems, Inc.
    • Richard E. DeFreitas
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

  • Information Trademark

    73745666 - A/D/S/
    • Serial number 73745666
    • Registration number 1560581
    • Filing date Aug 12, 1988
    • Analog & Digital Systems, Inc.
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
  • Information Trademark

    73359664 - ADS
    • Serial number 73359664
    • Registration number 1231758
    • Filing date Apr 13, 1982
    • Analog & Digital Systems, Inc.
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
  • Information Trademark

    73190527 - COMPU-TUNER
    • Serial number 73190527
    • Registration number 1170974
    • Filing date Oct 24, 1978
    • Analog & Digital Systems, Inc.
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments