Patents by Inventor Gerhard David

Gerhard David 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).

  • Electrical device for mouth care
    Patent number: 4827551
    Abstract: An electrical base powers an attached massaging head and toothbrush. Water flows through the base into the massaging head to stimulate the gums and clean the teeth.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: May 9, 1989
    Inventors: Brigitte Maser, Gerhard David