Patents by Inventor John F. Beetem

John F. Beetem 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: 4868549
    Abstract: A mouse for use in a video display system for controlling cursor movement on a display screen provided with feedback means which produces resistance to the motion of the mouse as the cursor moves across predetermined areas of the display screen. In its most straight forward realization it comprises an electromagnet and control circuit which operates independently of the pickup and location sensing control of the mouse to produce a magnetic field which acts cooperatively with a substantially planar magnetic surface to produce a resistance to the motion of the mouse when energized.
    Type: Grant
    Filed: May 18, 1987
    Date of Patent: September 19, 1989
    Assignee: International Business Machines Corporation
    Inventors: Frank J. Affinito, John F. Beetem