Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11450300 | Drum hoop fastening device | — | 2022-09-20 |
| 11346389 | Rotary closed-valve vacuum suction device | Hsin-Huang TSAI, Chun-Yen Tsao | 2022-05-31 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11450300 | Drum hoop fastening device | — | 2022-09-20 |
| 11346389 | Rotary closed-valve vacuum suction device | Hsin-Huang TSAI, Chun-Yen Tsao | 2022-05-31 |