Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5638437 | Telecommunication system and method enabling a user to get access to an automated call processing from a central station operating on pulse dialling mode | Joseph-Desire S. Kouam, Vatche Varvarian | 1997-06-10 |