TREA

Marianne Grisdale

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  • Chicago, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Earplug
    • Patent number D492768
    • Issue date Jul 6, 2004
    • Cabot Safety Intermediate Corporation
    • Richard Knauer
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Earplug
    • Patent number D492767
    • Issue date Jul 6, 2004
    • Cabot Safety Intermediate Corporation
    • Richard Knauer
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Garage door keyless entry system
    • Patent number D391507
    • Issue date Mar 3, 1998
    • The Chamberlian Group, Inc.
    • Loren E. Doppelt
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Transmitter for garage door opener
    • Patent number D380696
    • Issue date Jul 8, 1997
    • The Chamberlain Group, Inc.
    • Loren E. Doppelt
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Wall mounted garage door control
    • Patent number D378200
    • Issue date Feb 25, 1997
    • The Chamberlain Group, Inc.
    • Loren E. Doppelt
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Compact transmitter for garage door opener
    • Patent number D377767
    • Issue date Feb 4, 1997
    • The Chamberlain Group, Inc.
    • Loren E. Doppelt
    • D10 - Measuring, testing, or signalling instruments