Patents by Inventor Richard W. A. Birtwisle

Richard W. A. Birtwisle 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).

  • Stove
    Patent number: D336210
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: June 8, 1993
    Assignee: New World Domestic Appliances Limited
    Inventor: Richard W. A. Birtwisle