Patents by Inventor Frederick E. Diehl

Frederick E. Diehl 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).

  • Awning cleaning tool
    Patent number: D398105
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: September 8, 1998
    Inventors: Paul F. Diehl, Heidi A. Diehl, Frederick E. Diehl, Paul Diehl, Sr.
  • Awning cleaning tool
    Patent number: D398106
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: September 8, 1998
    Inventors: Paul F. Diehl, Frederick E. Diehl, Heidi A. Diehl, Paul Diehl, Sr.