Patents by Inventor Barbra A. Mathis

Barbra A. Mathis 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: 6666296
    Abstract: A speaker assembly includes a frame having a bottom portion, a plurality of vertical supports and a top wall. A pair of dividing walls is positioned in the frame and attached to the supports. A first wall of the pair of dividing walls is positioned generally between the top wall and the bottom portion. A second wall of the pair of dividing walls is positioned generally between the first wall and the top wall. A first compartment is defined between top wall and the first wall, a second compartment is defined between the first wall and the second wall, and a third compartment is defined between the second wall and the bottom portion. A plurality of tweeter speakers is mounted in the first compartment. A plurality of mid-range speakers is mounted in the second compartment. A base speaker is mounted in the third compartment.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: December 23, 2003
    Inventors: Wayman G. Mathis, Barbra A. Mathis