Patents by Inventor Charles R. Sigmon

Charles R. Sigmon 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).

  • Patent number: 5224234
    Abstract: A toothbrush with replaceable disposable bristles. A two unit toothbrush has a base member including a handle and a receptacle for a detachable bristle assembly unit which mates with the base member by insertion into the receptacle in which it is retained by a positive retaining member, such as a mating nib and groove. The bristle assembly is disposable and replaceable.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: July 6, 1993
    Inventors: Jeffrey L. Arsenault, Charles R. Sigmon