TREA

John G. Hamilton

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  • Edinburgh, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ventilation device
    • Patent number 5,505,659
    • Issue date Apr 9, 1996
    • Product Design & Innovation Limited
    • John George Hamilton
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Ventilation device
    • Patent number 4,957,038
    • Issue date Sep 18, 1990
    • John G. Hamilton
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS