Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5694013 | Force feedback haptic interface for a three-dimensional CAD surface | Yihan Chen | 1997-12-02 |
| 5627646 | Method for locating flaws in a smooth surface of an object | Yifan Chen | 1997-05-06 |