Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5058613 | One hand operated umbrella capable of self-closing | Tseng-Hsiung Su | 1991-10-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5058613 | One hand operated umbrella capable of self-closing | Tseng-Hsiung Su | 1991-10-22 |