Patents by Inventor Debra J. Keen

Debra J. Keen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ventilation grille
    Patent number: D419661
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: January 25, 2000
    Inventors: Debra J. Keen, Diane F. Hayes
  • Ventilation grille
    Patent number: D419662
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: January 25, 2000
    Inventors: Debra J. Keen, Diane F. Hayes
  • Ventilation grille
    Patent number: D419663
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: January 25, 2000
    Inventors: Debra J. Keen, Diane F. Hayes
  • Ventilation grille
    Patent number: D419664
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: January 25, 2000
    Inventors: Debra J. Keen, Diane F. Hayes
  • Ventilation grille
    Patent number: D419665
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: January 25, 2000
    Inventors: Debra J. Keen, Diane F. Hayes
  • Ventilation grille
    Patent number: D419666
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: January 25, 2000
    Inventors: Debra J. Keen, Diane F. Hayes
  • Ventilation grille
    Patent number: D419667
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: January 25, 2000
    Inventors: Debra J. Keen, Diane F. Hayes
  • Ventilation grille
    Patent number: D419668
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: January 25, 2000
    Inventors: Debra J. Keen, Diane F. Hayes
  • Ventilation grille
    Patent number: D420123
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: February 1, 2000
    Inventors: Debra J. Keen, Diane F. Hayes