Patents by Inventor Frederick W. Plimmer

Frederick W. Plimmer 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).

  • Pair of secateurs
    Patent number: D250509
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: December 12, 1978
    Assignee: Wilkinson Sword Limited
    Inventor: Frederick W. Plimmer
  • Pair of secateurs
    Patent number: D250988
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: February 6, 1979
    Assignee: Wilkinson Sword, Ltd.
    Inventor: Frederick W. Plimmer