Patents by Inventor Richard C. Kinnaird, Jr.

Richard C. Kinnaird, 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 station set interface circuit
    Patent number: 4088844
    Abstract: A telephone station set interface circuit is disclosed which enables a conventional nonkey telephone station set to be used in place of an electronic key telephone station set for those subscribers in an electronic business communication system requiring only a call origination and a call reception capability.
    Type: Grant
    Filed: December 21, 1976
    Date of Patent: May 9, 1978
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Richard C. Kinnaird, Jr.