Patents Represented by Attorney Donald Boys

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  • Reference pointer for a compass display
    Patent number: 5381603
    Abstract: An electronic compass has a display including a reference pointer that indicates a reference heading stored in response to an input signal. The reference heading is the current heading at the time of the input signal, and the reference pointer in the display is updated as the orientation of the compass changes.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: January 17, 1995
    Assignee: Precision Navigation, Inc.
    Inventor: John S. Lee