Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5658644 | Light weight board of improved mechanical strength and manufacture thereof | Jyh-yao Raphael Li | 1997-08-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5658644 | Light weight board of improved mechanical strength and manufacture thereof | Jyh-yao Raphael Li | 1997-08-19 |