Patents by Inventor Robert B. Perkins

Robert B. Perkins 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).

  • Display system
    Patent number: 3944998
    Abstract: A cathode-ray tube display system such as aircraft radar system in which alternative input information such as aircraft approach charts are suitably stored and may alternatively be displayed on the cathode-ray tube.
    Type: Grant
    Filed: November 4, 1974
    Date of Patent: March 16, 1976
    Inventor: Robert B. Perkins