Issued Patents 2020
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10865909 | Vacuum-keeping multistage vacuum-generating and vacuum-destructing valve | Ping-Cheng Yu | 2020-12-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10865909 | Vacuum-keeping multistage vacuum-generating and vacuum-destructing valve | Ping-Cheng Yu | 2020-12-15 |