P

Inventor

Zhao qian-cheng

CN5 patents
⚠️ This page may combine multiple inventors who share the name “Zhao qian-cheng”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

J METRICS TECH CO LTD

3 patents

SONICMEMS ZHENGZHOU TECH CO LTD

1 patent

HONG KONG APPLIED SCIENCE & TECH RESEARCH INST CO LTD

1 patent