Inventor

BI JINGQUAN

CN2 patents

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

CRRC QINGDAO SIFANG ROLLING STOCK RES INST CO LTD

1 patent

US9932053B2Apr 3, 2018

Hand brake limiting device

CRRC QINGDAO SIFANG ROLLING STOCK RES INST CO LTD0 citations32

CRRC QINGDAO SIFANG ROLLING STOCK RES

1 patent

US9828009B2Nov 28, 2017

Hand brake

CRRC QINGDAO SIFANG ROLLING STOCK RES0 citations25