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esser-effeff alarm GmbH

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Patents Grantslast 30 patents

  • Information Patent Grant

    Smoke detector
    • Patent number D485200
    • Issue date Jan 13, 2004
    • esser-effeff alarm GmbH
    • Oliver Berthold
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Manual call point
    • Patent number D478325
    • Issue date Aug 12, 2003
    • esser-effeff alarm GmbH
    • Oliver Berthold
    • D14 - Recording, communication, or information retrieval equipment

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