Patents by Inventor John A. Chambers

John A. Chambers 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).

  • Toy typewriter with integral platform
    Patent number: D268122
    Type: Grant
    Filed: May 28, 1980
    Date of Patent: March 1, 1983
    Assignee: Dobson Park Industries Limited
    Inventor: John A. Chambers
  • Combined printing toy and case therefore
    Patent number: D282185
    Type: Grant
    Filed: July 16, 1982
    Date of Patent: January 14, 1986
    Assignee: Dobson Park Industries Limited
    Inventors: John A. Chambers, Alan Collison