Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5002124 | Underground temperature and pressure measuring system for hot-exploiting oil well | Ma K. Ming, Sun Zhenfang, Liu Li, Li Min | 1991-03-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5002124 | Underground temperature and pressure measuring system for hot-exploiting oil well | Ma K. Ming, Sun Zhenfang, Liu Li, Li Min | 1991-03-26 |