Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11262005 | Superhigh torsional strength, metallic and airtight drillrod coupler | Peng Zhao, Minghua Wang, Shaofeng Liu, Lin Yuan | 2022-03-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11262005 | Superhigh torsional strength, metallic and airtight drillrod coupler | Peng Zhao, Minghua Wang, Shaofeng Liu, Lin Yuan | 2022-03-01 |