Patents by Inventor Christiaan R. Weideman

Christiaan R. Weideman 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).

  • Toothbrush
    Patent number: 4277862
    Abstract: This invention relates to a toothbrush which includes tufts of bristles which are fixed to and project from a head to define a substantially rectangular brush surface and a pair of resilient gum massage members which are located on opposite long sides of the brush surface with each massage member being at least as long as the brush surface occupied by three tufts of bristles but shorter than the surface and as wide as a tuft of bristles.
    Type: Grant
    Filed: November 28, 1979
    Date of Patent: July 14, 1981
    Assignee: Alexander E. Vowles
    Inventor: Christiaan R. Weideman