Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6625461 | Method and system for providing compatibility between telecommunication networks using different transmission signaling systems | — | 2003-09-23 |
| 6097950 | Method and system for global roaming in a cellular telecommunications system | — | 2000-08-01 |
| 5978681 | Method and apparatus for providing calling service features within incompletely upgraded cellular telephone networks | — | 1999-11-02 |
| 5930698 | Method and apparatus for efficient law enforcement agency monitoring of telephone calls | — | 1999-07-27 |
| 5884180 | Method of providing a delayed connection announcement to a mobile subscriber within a radio telecommunication system | — | 1999-03-16 |
| 5790638 | Signaling in call transfer calling operations to control the initiation of secondary number telephone service features | — | 1998-08-04 |