Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11549602 | Liquid seal method for on-off of gas pipeline and device thereof | Tengfei Zhang, Guanyi Chen | 2023-01-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11549602 | Liquid seal method for on-off of gas pipeline and device thereof | Tengfei Zhang, Guanyi Chen | 2023-01-10 |