ZM

Zengrui Ma

Overall (2016): #167,401 of 481,213Top 35%
1
Patents 2016

Issued Patents 2016

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9431186 Clutch device of gear transmission system of circuit breaker spring operating mechanism Hongxiang Deng, Jufang Su, Qiang Zhang 2016-08-30