TREA

Dean R. Sommerfeld

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  • Cottage Crove, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vertical blind
    • Patent number 5,894,877
    • Issue date Apr 20, 1999
    • Springs Window Fashions Division, Inc.
    • Dean R. Sommerfeld
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Vertical blind apparatus
    • Patent number 5,088,542
    • Issue date Feb 18, 1992
    • Graber Industries, Inc.
    • Scott I. Biba
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Vertical blind with louver rotation control
    • Patent number 5,038,843
    • Issue date Aug 13, 1991
    • Graber Industries, Inc.
    • Dean R. Sommerfeld
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS