Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5966433 | Method and apparatus for screening calls in telephone networks | Gilles Trepanier, Ron Kelly, Luc Samson, Michel Tougas | 1999-10-12 |
| 5579381 | Methods and apparatus for providing suppressed ringing access | Sandro Cianci, Jeffrey J. Brown, Norman Zolyniak | 1996-11-26 |