Patents by Inventor Douglas A. Bancroft

Douglas A. Bancroft 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 repeater station for signal transmissions
    Patent number: 5408681
    Abstract: An automatic repeater station, sometimes called a relay system, is disclo. The relay system receives signals, preferably at one band of frequencies, then filters and restores their inherent information, and finally transmits the restored information, preferably at another band of frequencies. Unlike the prior art systems utilizing transceivers and electronically tunable filters, the present invention uses separate receivers and transmitters and is devoid of electronically tunable filters.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: April 18, 1995
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Elliott L. Ressler, Yoram Levy, Douglas A. Bancroft