Patents by Inventor Rafael Herrera Fernandez

Rafael Herrera Fernandez 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).

  • Electronic devices for the automatic control of gain and roll-off in amplifiers
    Patent number: 3940707
    Abstract: An electronic circuit for automatically controlling gain and roll-off in wide-band amplifiers for use in tele-distribution systems including a feedback network with a negative temperature coefficient pure ohmic resistance feedback. When automatically controlling roll-off, a second negative temperature coefficient resistance is placed in series with an inductance.
    Type: Grant
    Filed: June 5, 1974
    Date of Patent: February 24, 1976
    Assignee: Industrias Rumbo, S.A.
    Inventor: Rafael Herrera Fernandez