Patents by Inventor Donald James Maxwell

Donald James Maxwell 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).

  • Buoyant wick holder
    Patent number: D247193
    Type: Grant
    Filed: May 13, 1976
    Date of Patent: February 7, 1978
    Assignee: Rizla Limited
    Inventor: Donald James Maxwell
  • Buoyant wick holder
    Patent number: D247635
    Type: Grant
    Filed: May 13, 1976
    Date of Patent: March 28, 1978
    Assignee: Rizla Limited
    Inventor: Donald James Maxwell
  • Buoyant wick holder
    Patent number: D248689
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: July 25, 1978
    Assignee: Rizla Limited
    Inventor: Donald James Maxwell