Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860179 | Illuminated umbrella | Rosa Y. M. Tso | 1989-08-22 |
| 4848874 | Video monitor shade | Rosa Y. M. Tso | 1989-07-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860179 | Illuminated umbrella | Rosa Y. M. Tso | 1989-08-22 |
| 4848874 | Video monitor shade | Rosa Y. M. Tso | 1989-07-18 |