Patents by Inventor John A. Dumbrell

John A. Dumbrell 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).

  • Egg flip-scraper and spatula
    Patent number: D312029
    Type: Grant
    Filed: August 27, 1987
    Date of Patent: November 13, 1990
    Assignee: Kader Plastics Pty. Ltd.
    Inventor: John A. Dumbrell
  • Stackable container
    Patent number: D328030
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: July 21, 1992
    Inventor: John A. Dumbrell