Patents by Inventor Hans F. Hafendehl

Hans F. Hafendehl 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).

  • Roll-top file storage box
    Patent number: D343641
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: January 25, 1994
    Inventors: Hans F. Hafendehl, Bernd Brussing