P

Inventor

CHENG YUGANG

CN2 patents
⚠️ This page may combine multiple inventors who share the name “CHENG YUGANG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NANJING CHERVON IND CO LTD

1 patent

CHONGQING INST GEOLOGY & MINERAL RESOURCES

1 patent