Qingdao
China
3
2019-10-03
The entities that hold a legal rights for patent applications filed by inventor HAN Qingjun:
Qingjun HAN from Qingdao, CN has applied for patents for these inventions. The list has both pending applications and granted patents:
Method, Device and System for Controlling Fuel Cell and Rail Vehicle
#2 | 2019-01-24Method, system and device for controlling door of railway vehicle
#3 | 2019-01-24Alarming and unlocking device
2407795 ⎘