Patents by Inventor Elizabeth B. Knight

Elizabeth B. Knight 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).

  • Bedpan
    Patent number: D270018
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: August 9, 1983
    Assignee: Rubbermaid Commercial Products Inc.
    Inventor: Elizabeth B. Knight
  • Bottle handle
    Patent number: D336827
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: June 29, 1993
    Assignee: Kiddie Products, Inc.
    Inventor: Elizabeth B. Knight
  • Container
    Patent number: D422849
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: April 18, 2000
    Assignee: The First Years, Inc.
    Inventors: Elizabeth B. Knight, Bryan R. Hotaling