Patents by Inventor Walter Martin Konrad

Walter Martin Konrad 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).

  • Single wall shutter slat
    Patent number: D601716
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: October 6, 2009
    Inventors: Walter Martin Konrad, Stefan Andreas Poetsch
  • Rolling shutter slat
    Patent number: D602170
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: October 13, 2009
    Assignee: Rollac Shutter of Texas, Inc.
    Inventors: Walter Martin Konrad, Stefan Andreas Poetsch, Manuel J. Montez
  • Rolling shutter slat
    Patent number: D617006
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: June 1, 2010
    Inventor: Walter Martin Konrad
  • Rolling shutter side rail
    Patent number: D631171
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: January 18, 2011
    Inventor: Walter Martin Konrad
  • Base slat for a rolling shutter system
    Patent number: D649661
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: November 29, 2011
    Inventor: Walter Martin Konrad
  • Rolling shutter exterior counter stop bracket
    Patent number: D705040
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: May 20, 2014
    Inventors: Walter Martin Konrad, Stefan Andreas Poetsch, Travis Lee Ewing