Patents by Inventor Hans Liebscher

Hans Liebscher 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).

  • Twisted downspout
    Patent number: D515674
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: February 21, 2006
    Inventor: Hans Liebscher
  • Roof shingle
    Patent number: D495066
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: August 24, 2004
    Inventor: Hans Liebscher