Patents by Inventor Anthony C. Stein, Jr.

Anthony C. Stein, Jr. 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 call timer
    Patent number: 4088839
    Abstract: This invention relates to a timing unit for detachable mounting upon a conventional telephone instrument, having for its purpose the measuring of a predetermined time cycle and the emission of a signal, or a succession of time-spaced signals, when overtime charges are accumulating or are about to begin.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: May 9, 1978
    Inventor: Anthony C. Stein, Jr.