Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7988442 | Vacuum mold and device for drilling extraction holes therein | Jiang Feng Yu, Yi Zhao, BO LIU, Shao-Hui Zhang, QING-MING YUAN | 2011-08-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7988442 | Vacuum mold and device for drilling extraction holes therein | Jiang Feng Yu, Yi Zhao, BO LIU, Shao-Hui Zhang, QING-MING YUAN | 2011-08-02 |