Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6115046 | Method and apparatus for generating three dimensional drawing on a graphics display | Liangpin Chen | 2000-09-05 |
| 5561748 | Method and apparatus for creating solid models from two-dimensional drawings on a graphics display | Liangpin Chen | 1996-10-01 |