Patents by Inventor Anne Margaret Letherby

Anne Margaret Letherby 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).

  • Patent number: D407507
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: March 30, 1999
    Assignee: Easy Gardener, Inc.
    Inventors: Joseph A. Owens, II, Richard M. Grandy, Paul David Hurley, Anne Margaret Letherby