Patents by Inventor Willis R. Dawirs

Willis R. Dawirs 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).

  • Low duty cycle navigation system
    Patent number: 6040801
    Abstract: This invention relates to radio navigation systems and is particularly dited to means for transmitting range and azimuthal information to selected receivers only. More specifically this invention relates to a R-O navigating system in which the signal is so concealed in noise that the signal is of use only to friendly, as distinguished from enemy receivers. By this system enemy aircraft, in a military sense, cannot `home` on either the shipboard or land-based beacons. Mobile equipment of the system of this invention is passive and is, hence, not subject to detection.
    Type: Grant
    Filed: April 30, 1964
    Date of Patent: March 21, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Willis R. Dawirs