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Duane Darnell

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  • Redmond, OR, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Systems for a fire-resistant door jamb
    • Patent number 7,921,603
    • Issue date Apr 12, 2011
    • Duane Darnell
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Fire door
    • Patent number 7,669,383
    • Issue date Mar 2, 2010
    • Warm Springs Composite Products
    • Duane Darnell
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents

  • Information Patent Application

    Fire door
    • Publication number 20060207199
    • Publication date Sep 21, 2006
    • Duane Darnell
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    Systems and installation methods for a fire-resistant door jamb
    • Publication number 20060048466
    • Publication date Mar 9, 2006
    • Duane Darnell
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS