Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10036213 | Connection structure between pipe body and joint of aluminum alloy drill pipe | Fangpo Li, Xiaojun Li | 2018-07-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10036213 | Connection structure between pipe body and joint of aluminum alloy drill pipe | Fangpo Li, Xiaojun Li | 2018-07-31 |