Patents by Inventor Robert E. Erdmann, Jr.

Robert E. Erdmann, Jr. 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).

  • Point and select device
    Patent number: 4939508
    Abstract: A point and select device is disclosed in which a sphere protruding from one major surface of a housing can serve as either a trackball or the moving element in a mouse. Actuators on either side of the device are selected according to the use of the device. The sense of motion for up/down is reversed between the two modes of operation.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: July 3, 1990
    Assignee: Emtek Health Care Systems, Inc.
    Inventors: James G. Lawrence, Oscar R. Diaz, Robert E. Erdmann, Jr.