Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6359975 | Intelligent-networked telecommunication system which strategically creates and employs service-dependent pseudo calling line identities to eliminate redundant billing errors | — | 2002-03-19 |
| 6356630 | Telephone calling card service system integrating virtual destination numbers | Shiyan Hua | 2002-03-12 |