Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5969630 | Method for the deregistration of a user registered at a terminal via registration data, and also telecommunications system | Andre Lensink | 1999-10-19 |
| 5960365 | Simultaneous registration in multiple overlapping domains | Willem Gerard Levelt | 1999-09-28 |