Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6405051 | Method and apparatus for using a B-answer signal to prevent a voice announcement in a group call | Jan Peter Ramle | 2002-06-11 |
| 6366652 | Method and apparatus for using a VM tone to prevent a voice announcement in a group call | Jan Peter Ramle | 2002-04-02 |