EP-4663991-A4 - ANTI-FREEZE VALVE
EP4663991A4EP 4663991 A4EP4663991 A4EP 4663991A4EP-4663991-A4
Inventors
- YU ZHOU
- MA YANTING
- Lou xuanbo
Assignees
- ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD
Dates
- Publication Date
- 20260506
- Application Date
- 20240204
- Priority Date
- 20230210