TREA

COMMUNICATION SYSTEMS INTERNATIONAL, INC

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Organization

  • CALGARY, CA
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Antenna coupler
    • Patent number 6,549,091
    • Issue date Apr 15, 2003
    • Communications Systems International, Inc.
    • Doug Spurell
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Ceramic filter for use with a beacon receiver
    • Patent number 6,501,346
    • Issue date Dec 31, 2002
    • Communications Systems International, Inc.
    • Doug Spurell
    • H03 - BASIC ELECTRONIC CIRCUITRY