Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6657992 | System and method for providing service control to a single telephone end terminal from multiple service providers | — | 2003-12-02 |
| 6658095 | Customized presence information delivery | John H. Yoakum, Steve J. McKinnon | 2003-12-02 |
| 6636508 | Network resource conservation system | Xuewen Li | 2003-10-21 |
| 6591301 | Methods and systems for controlling network gatekeeper message processing | Xuewen Li | 2003-07-08 |
| 6549621 | Method and system for integrating a computer and a telephone | Patrick J. Dagert | 2003-04-15 |