Patents by Inventor Naomi A. Trowbridge

Naomi A. Trowbridge 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).

  • Twirling baton with brake
    Patent number: 3962949
    Abstract: A twirling baton with a handle mounted on an axis extending perpendicular to the axis of the baton shaft by which the baton may be twirled with minimal effort, said handle being equipped with braking means to quickly stop the rotation of the baton when desired.
    Type: Grant
    Filed: February 27, 1975
    Date of Patent: June 15, 1976
    Inventors: Leonard D. Trowbridge, Naomi A. Trowbridge