Patents by Inventor John M. Sayre, II

John M. Sayre, II 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).

  • Telephone message waiting system and apparatus
    Patent number: 4969186
    Abstract: A system transmits information over telephone lines using ring signals. The ring signals have bursts of selectable duration separated by selectable time intervals between bursts. A ring signal translator receives the ring signals from telephone lines whereupon a computer activates selected indicators in response to the particular ring signal.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: November 6, 1990
    Assignee: GTE North Incorporated
    Inventor: John M. Sayre, II