21 Utility Patents
#2,189 in Beijing
#5,348 in China
#157,258 in the World
Forward Citations = 5
Company Filing History:
China University of Mining and Technology
Wuhan Changsheng Mine Security Technology Limited
Shaanxi Coal Caojiatan Mining Co., Ltd.
4. 1 out of 1
University of Mining and Technology—beijing Inner Mongolia Research Institute
where one patent can have more than one assignee
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