Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6527704 | Endoscopic camera system integrated with a trocar sleeve | William H. L. Chang | 2003-03-04 |
| 6224542 | Endoscopic camera system with non-mechanical zoom | William H. L. Chang, Salmaan Hameed, Richard A. Beutter | 2001-05-01 |