Anfeng YU

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Qingdao, Shandong, CN

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Patents Applicationslast 30 patents

Information Patent Application
FLAME ARRESTER HAVING DEFORMATION UNIT ASSEMBLY
- Publication number 20240165442
- Publication date May 23, 2024
- China Petroleum and Chemical Corporation
- Anfeng YU
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
FLAME ARRESTER
- Publication number 20230226393
- Publication date Jul 20, 2023
- China Petroleum and Chemical Corporation
- Lei BAO
- A62 - LIFE-SAVING FIRE-FIGHTING