Patents by Inventor Allen C. Clark

Allen C. Clark 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).

  • Equalizing amplifier
    Patent number: 4074204
    Abstract: A fully passive frequency contouring amplifier using segregated passive networks to shape the different portions of the signal thus avoiding all phase distortion and permitting the stages to be coupled without coupling capacitors, thus avoiding distortion caused by the nonlinearities of capacitors. In addition, a special DC servo loop is used to drastically reduce DC amplification.
    Type: Grant
    Filed: November 22, 1976
    Date of Patent: February 14, 1978
    Assignee: Van Alstine Audio Systems, Inc.
    Inventors: Gregory W. Broburg, Allen C. Clark