Patents by Inventor Lisa C. Leonard

Lisa C. Leonard 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).

  • Extended dental clamp
    Patent number: 5503556
    Abstract: A dental rubber dam clamp capable of isolating a tooth not capable of being clamped itself. Isolation is achieved by jaw extensions that engage and position the robber dam on the clamp and by placement of the clamp with its springy bridge toward the mesial or midline rather than distally.
    Type: Grant
    Filed: December 14, 1994
    Date of Patent: April 2, 1996
    Inventors: Lisa C. Leonard, William C. R. Crane