Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11308695 | Optical apparatus and augmented reality device | Zhou Zhang, Lu TANG | 2022-04-19 |
| 7058990 | Lightweight lens retainer's diving mask | — | 2006-06-13 |
| 6532603 | Swim goggles | — | 2003-03-18 |
| 5890234 | One piece water drain unit in a diver mask | — | 1999-04-06 |
| 5865169 | Snorkel having improved inlet cap | Chih-Ban Hsu | 1999-02-02 |