7 Utility Patents
#5 in Heilongjiang
#18,913 in China
#595,289 in the World
Forward Citations = 5
Company Filing History:
Qiqihar Railway Rolling Stock Co., Ltd.
Dalian Qiche Railway Rolling Stock Co., Ltd.
Mudanjiang Jinyuan Coupler and Draft Gear Manufacturing Co., Ltd.
4. 1 out of 10
Crrc Qiqihar Rolling Stock Co., Ltd.
5. 1 out of 1
Crrc Qiqihar Rolling Stock Co., Ltd. Dalian Research & Development Center
where one patent can have more than one assignee
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