Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6181927 | Sponsored call and cell service | James Brian Welling, Jr., Sima Chiniwala, Stewart H. Maxwell, Thanh Pham | 2001-01-30 |
| 6175622 | Virtual private network for a telephone network | Sima Chiniwala, James Brian Welling, Jr., Stewart H. Maxwell, Thanh Pham | 2001-01-16 |