Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7374139 | Retractable support tube structure | Chin-Lung Tsai, Chi-Chang Chen | 2008-05-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7374139 | Retractable support tube structure | Chin-Lung Tsai, Chi-Chang Chen | 2008-05-20 |