Issued Patents 2022
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11346389 | Rotary closed-valve vacuum suction device | Kuo-Chang Chen, Hsin-Huang TSAI | 2022-05-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11346389 | Rotary closed-valve vacuum suction device | Kuo-Chang Chen, Hsin-Huang TSAI | 2022-05-31 |