Patents by Inventor Duncan J. MacMillan, Jr.

Duncan J. MacMillan, 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).

  • Feature telephone integration device
    Patent number: 4873718
    Abstract: A feature telephone integration device is disclosed. The device is intended for use in a PBX-type environment for use in a telephone system. The present invention uses communications with a feature phone as the source of information for an applications processor.
    Type: Grant
    Filed: November 22, 1988
    Date of Patent: October 10, 1989
    Assignee: Octel Communications Corp.
    Inventors: Paul M. Barnett, Douglas A. Welch, Duncan J. MacMillan, Jr.