Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8082942 | Oil pipe connector | Ying-Ying Chang, Li-Jen Chang | 2011-12-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8082942 | Oil pipe connector | Ying-Ying Chang, Li-Jen Chang | 2011-12-27 |