Patents by Inventor Diana A. Sawyer

Diana A. Sawyer 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).

  • Gutter drain device
    Patent number: D475440
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: June 3, 2003
    Inventor: Diana A. Sawyer
  • Gutter drain device
    Patent number: D482433
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: November 18, 2003
    Inventor: Diana A. Sawyer