Patents by Inventor William O. Dunnican

William O. Dunnican 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).

  • AGC technique for spectrum analyzers
    Patent number: 4628255
    Abstract: An automatic gain control system is disclosed which utilizes a voltage coolled vario-losser means to vary the AGC System output. The control voltage is derived from the lowest detected level from any of a plurality of narrow band pass filters, such as the monolithic crystal type now available, each of which has a different peak transmittance frequency which is close to but different from a frequency of interest.
    Type: Grant
    Filed: December 8, 1969
    Date of Patent: December 9, 1986
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: William O. Dunnican