Issued Patents 2019
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10197222 | Shut-off device for pipe | Carson Wai Keung Lee | 2019-02-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10197222 | Shut-off device for pipe | Carson Wai Keung Lee | 2019-02-05 |