Patents by Inventor Howard Robert Popper

Howard Robert Popper 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).

  • Nonlocking key telephone set
    Patent number: 4021622
    Abstract: A nonlocking key telephone station is arranged to display full line status information when the station is on-hook and for normally illuminating only the key lamp associated with the line in use at the station when the set is off-hook. To permit a user to discern the full status of the lines terminating at the set when the set is off-hook, circuitry responsive to the depression of one of the keys at the station is provided for displaying full line status information.
    Type: Grant
    Filed: December 5, 1975
    Date of Patent: May 3, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: John Francis O'Neill, Howard Robert Popper