Inventor

GUAN QUANMEI

CN2 patents

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

TANGSHAN RAILWAY VEHICLE CO

1 patent

US9409580B2Aug 9, 2016

Obstacle removing and energy absorbing device and leading car of motor train unit

TANGSHAN RAILWAY VEHICLE CO3 citations62

CRRC TANGSHAN CO LTD

1 patent

US12157505B2Dec 3, 2024

Sidewall window structure module of train, and train

CRRC TANGSHAN CO LTD0 citations36