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Donald F. Klus

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  • Tigard, OR, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fire door components and fire doors comprising the components
    • Patent number 6,648,965
    • Issue date Nov 18, 2003
    • G-P Gypsum Corporation
    • Donald F. Klus
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Fire door core
    • Patent number 6,554,893
    • Issue date Apr 29, 2003
    • Georgia-Pacific Corporation
    • Donald F. Klus
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Fire door core
    • Patent number 6,340,389
    • Issue date Jan 22, 2002
    • G-P Gypsum Corporation
    • Donald F. Klus
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents