Patents by Inventor Margaret H. Christensen

Margaret H. Christensen 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).

  • Computer mouse interface device
    Patent number: 6005552
    Abstract: A device for use with a computer mouse including a platform for defining a surface for movement of the computer mouse thereon. Also included is a support supporting the platform in an operable position. A frame is mounted on the platform for defining a predetermined area in the platform surface for limiting movement of the mouse to the predetermined area.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: December 21, 1999
    Inventors: Carol A. J. Stanley, Margaret H. Christensen