Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5301658 | Membrane endoscopic retractor | Yong Hua Zhu | 1994-04-12 |
| 5293863 | Bladed endoscopic retractor | Yong Hua Zhu | 1994-03-15 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5301658 | Membrane endoscopic retractor | Yong Hua Zhu | 1994-04-12 |
| 5293863 | Bladed endoscopic retractor | Yong Hua Zhu | 1994-03-15 |