10 Utility Patents
#4,429 in Beijing
#13,005 in China
#407,791 in the World
Forward Citations = 0
Company Filing History:
China University of Petroleum
Cnpc Engineering Technology R&d Company Limited
Cnpc Chuanqing Drilling Engineering Company Limited
4. 1 out of 38
China University of Geosciences (beijing)
5. 1 out of 2
Beijing Shida Bocheng Technology Co., Ltd
where one patent can have more than one assignee
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