Patents by Inventor Francisca P. Leite

Francisca P. Leite 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).

  • Tooth cleaning system with timer and signaling means
    Patent number: 5438726
    Abstract: A toothbrush with timer and signalling apparatus having interchangeable periodontal devices. The signalling apparatus is composed of both an audio and vibrating signalling device to alert the user when the preset time limit is achieved.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: August 8, 1995
    Inventor: Francisca P. Leite