Issued Patents 2016
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9377125 | Shut-off device for pipe | Wai Yeung Cheung | 2016-06-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9377125 | Shut-off device for pipe | Wai Yeung Cheung | 2016-06-28 |