4 Utility Patents
#9,319 in Beijing
#33,786 in China
Forward Citations = 0
Company Filing History:
Cnpc Engineering Technology R&d Company Limited


4. 1 out of 1,467
Hefei Xinsheng Optoelectronics Technology Co., Ltd.
5. 1 out of 18,120

where one patent can have more than one assignee
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