Patents by Inventor Leonard F. Smisson

Leonard F. Smisson 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).

  • Aircraft performance data qualifier
    Patent number: 4161299
    Abstract: A method and apparatus to obtain performance data for maximum cruise economy on any particular aircraft by means of a device comprising three thin round flat disc concentrically mounted to one another. Various aircraft performance scales are imprinted upon the rotatable discs and there is provided an indicating pointer which may be set in a level position based upon the readings of the calibrated scales and based upon the throttle setting of the aircraft while in flight to give maximum cruise economy.
    Type: Grant
    Filed: April 20, 1978
    Date of Patent: July 17, 1979
    Inventor: Leonard F. Smisson