Patents by Inventor James T. Stillwell

James T. Stillwell 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).

  • System for annunciating emergencies
    Patent number: 4887291
    Abstract: Disclosed is a system that can monitor occupied or unoccupied buildings, and annuciate to a distant point, e.g. a digital pocket paper, emergency events such as burglaries, fires, high or low temperature, high or low flow rate in such devices as boilers and many more. The system has a circuit that makes interfacing with most commercial field detectors especially easy, and a circuit that enables the system to easily access telephone lines, so as to transmit annunciation messages.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: December 12, 1989
    Assignee: American Monitoring Systems, Inc.
    Inventor: James T. Stillwell