P

Inventor

SONG YANFENG

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

NANJING KANGTAI CONSTRUCTION GROUTING TECH CO LTD

1 patent

UNIV XI AN JIAOTONG

1 patent