Patents by Inventor Donald O. Lundvall, I

Donald O. Lundvall, I 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).

  • Patent number: 4177465
    Abstract: A near-range personnel beacon locator apparatus utilizing a tuned tank circuit to receive the emitted signal from an activated personnel beacon. The detected signal is applied to a D.C. amplifier to provide a D.C. level which drives a controlled variable duty cycle timer for driving a light emitting diode indicator.
    Type: Grant
    Filed: October 6, 1978
    Date of Patent: December 4, 1979
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Donald O. Lundvall, I, John P. Engels, Robert R. Yesconis