6 Utility Patents
#6,731 in Beijing
#22,310 in China
#695,270 in the World
Forward Citations = 6
Company Filing History:


China National Offshore Oil Corporation Research Institute
4. 1 out of 11
Shanghai Zhenhua Heavy Industries Company Limited
5. 1 out of 2
No. 2 Engineering Co. of Cccc First Harbor Engineering Co., Ltd.
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