Patents by Inventor Charles B. Abbott

Charles B. Abbott 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).

  • Emergency service apparatus and method
    Patent number: 5162776
    Abstract: An apparatus and method for providing a positive indication at a central monitoring station of a personal emergency response system that a responder has arrived at a subscriber's location and has taken responsibility for the subscriber's aid.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: November 10, 1992
    Assignee: Lifeline Systems, Inc.
    Inventors: Robert A. Bushnell, Stewart B. French, Charles B. Abbott