Patents by Inventor Daniel J. Rizzo

Daniel J. Rizzo 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 line access arrangement
    Patent number: 6049605
    Abstract: A telephone line access arrangement for a telephone instrument and a modem gives priority to the telephone instrument in all instances. A microprocessor controls the modem and receives an input signal that is indicative of the existence of an off hook state for the telephone instrument. Logic device generates the input signal based upon the different electrical conditions characterizing the telephone instrument and the modem.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: April 11, 2000
    Assignee: Zenith Electronics Corporation
    Inventor: Daniel J. Rizzo