Patents by Inventor Thanh J. Gahr

Thanh J. Gahr 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).

  • Automatic testing of position sensing devices employing stored sensed position
    Patent number: 4845475
    Abstract: An automatic testing method and apparatus for proximity switches toggles a proximity switch while storing the initial state of the proximity switch until the toggling is successfully completed. Both the proximity switch position and the validity of the information are provided as outputs.
    Type: Grant
    Filed: November 17, 1987
    Date of Patent: July 4, 1989
    Assignee: The Boeing Company
    Inventors: Joseph T. Cooledge, Thanh J. Gahr