15 Utility Patents
#3,025 in Beijing
#7,962 in China
#247,047 in the World
Forward Citations = 62
Company Filing History:



4. 1 out of 19
Cnpc Engineering Technology R&d Company Limited
5. 1 out of 4,280

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#3,025 in Beijing
#7,962 in China
#247,047 in the World
Company Filing History:




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