Patents by Inventor A. Mattes

A. Mattes 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 direction finding equipment for airplanes
    Patent number: 3949399
    Abstract: An automatic direction finding system for an airplane which utilizes ground equipment for automatically determining the line of position of aircraft transmitting radiant energy and which calculates the aircraft's line of position and transmits such line of position to the aircraft over an available audio channel. The ground station may be unmanned and provides for storage means for converting the aircraft's bearing from the station into an audible message which can be automatically transmitted to the aircraft.
    Type: Grant
    Filed: May 22, 1974
    Date of Patent: April 6, 1976
    Assignee: Rohde & Schwarz
    Inventors: Franz R. Huber, A. Mattes