Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5533541 | Automatic umbrella with multiple operation modes | Jonathan Cheng | 1996-07-09 |
| 5463536 | Umbrella with a light source and light refracting means | Jonathan Cheng, Chin-I Lin | 1995-10-31 |