Patents by Inventor Walter Louis Berenson

Walter Louis Berenson 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).

  • Omni-frequency pilot system
    Patent number: 4034296
    Abstract: A mixer connected to receive a pilot signal from a suppressed carrier communications system and further connected to receive a signal from a crystal controlled oscillator with a plug-in crystal is disclosed. The output of the mixer is coupled through a very narrow bandpass filter tuned to pass only the converted pilot frequency. The output of the mixer develops a control signal which is coupled to a regulating input of variable gain amplifier means for regulating the gain of the amplifier means in direct proportion to changes in level of the pilot.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: July 5, 1977
    Assignee: Motorola, Inc.
    Inventors: Walter Louis Berenson, Ronald Wayne Taylor