Patents by Inventor Donald P. Kampes

Donald P. Kampes 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).

  • Phantom powered amplifier
    Patent number: 4737735
    Abstract: A circuit for receiving unbalanced inputs and providing balanced outputs to a console wherein the console provides phantom power. The circuit isolates the phantom power to provide bias supply to the amplifier circuit which converts the unbalanced input to a balanced output.
    Type: Grant
    Filed: July 25, 1986
    Date of Patent: April 12, 1988
    Inventor: Donald P. Kampes