Patents by Inventor Barry G. Fletcher

Barry G. Fletcher 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).

  • Primary land arctic navigation system
    Patent number: 5075693
    Abstract: A land navigation system for use in a vehicle, comprises, in combination, a device providing a signal representative of the heading of the vehicle, a device providing a signal representative of the speed of the vehicle, and a computing apparatus responsive to the vehicle heading representative signal and the vehicle speed representative signal for providing a continuous indication of the position, altitude and heading of the vehicle.
    Type: Grant
    Filed: October 5, 1989
    Date of Patent: December 24, 1991
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian Government
    Inventors: Joseph C. McMillan, Marc Dion, David F. Liang, Michael E. Vinnins, Barry G. Fletcher