Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363936 | Telephone network including common equipment with message information and control information circuits for connecting to stations having multifunction telephones | Ronald W. Christain, Stanley L. Russell, Barry Slingsby, Julian Wray West | 1982-12-14 |