AU-2025202236-B2 - Stepped filtering dust mask
AU2025202236B2AU 2025202236 B2AU2025202236 B2AU 2025202236B2AU-2025202236-B2
Inventors
- LI, XIAOCHUAN
- WEI, Yuchen
- YE, MIN
- ZHANG, MINGMING
- ZHANG, YU
- ZHOU, Fubao
- ZHU, Linling
Assignees
- CHINA ACADEMY OF SAFETY SCIENCE AND TECHNOLOGY
Dates
- Publication Date
- 20260507
- Application Date
- 20250313
- Priority Date
- 20240923