Patents by Inventor Carol A. Berckenhoff

Carol A. Berckenhoff 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).

  • Newspaper vending rack
    Patent number: D408862
    Type: Grant
    Filed: January 2, 1998
    Date of Patent: April 27, 1999
    Assignee: Kaspar Wire Works, Inc.
    Inventors: Carol A. Berckenhoff, Ralph J. Ullmann
  • Newspaper vending rack
    Patent number: D414515
    Type: Grant
    Filed: January 2, 1998
    Date of Patent: September 28, 1999
    Assignee: Kaspar Wire Works, Inc.
    Inventors: Carol A. Berckenhoff, Ralph J. Ullmann