Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8608838 | Tubing air purification system | Tin Cheung Wong | 2013-12-17 |
| 5033200 | Scientific ruler | — | 1991-07-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8608838 | Tubing air purification system | Tin Cheung Wong | 2013-12-17 |
| 5033200 | Scientific ruler | — | 1991-07-23 |