Patents by Inventor Clifford R. Thomas

Clifford R. Thomas 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).

  • Transformer alarm annunciator
    Patent number: 4868547
    Abstract: The present invention is a transformer alarm annunciator which discloses a system that transmits a general alarm signal to a central location in response to one of a plurality of alarm conditions without blocking the signal path, so that in the event of system failure the alarm signal will still be transmitted as a transformer alarm. The device provides a means to disable a particular alarm condition while allowing the remaining alarms to be monitored.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: September 19, 1989
    Assignee: Georgia Power Company
    Inventors: Clifford R. Thomas, John P. Johnson