Inventor

ZHANG DERONG

CN3 patents

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

XU SHIFENG

1 patent

US8671845B2Mar 18, 2014

Central suspension device, wagon bogie and express railway wagon

XU SHIFENG3 citations50

QIQIHAR RAILWAY ROLLING STOCK CO LTD DALIAN R&D CENTRE

1 patent

US10086851B2Oct 2, 2018

Bogie and axle box suspension positioning device thereof

QIQIHAR RAILWAY ROLLING STOCK CO LTD DALIAN R&D CENTRE0 citations29

CRRC QIQIHAR CO LTD DALIAN RES & DEVELOPMENT CENTER

1 patent

US10144437B2Dec 4, 2018

Swing bolster, swing bolster vibration reduction assembly and bogie

CRRC QIQIHAR CO LTD DALIAN RES & DEVELOPMENT CENTER0 citations27