Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8855932 | Method and apparatus for measuring surface air pressure | Yongxiang Hu | 2014-10-07 |
| D392653 | Casing for receiving a transmitting mechanism of a drill machine therein | — | 1998-03-24 |