Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9435178 | Oil and gas reservoir electric logging overflow safety control wireline hanger | Feng Li, Yuanliang Zhao | 2016-09-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9435178 | Oil and gas reservoir electric logging overflow safety control wireline hanger | Feng Li, Yuanliang Zhao | 2016-09-06 |