2 Utility Patents
#14,979 in Beijing
#63,973 in China
Forward Citations = 0
Company Filing History:
Cnpc Engineering Technology R&d Company Limited
Beijing Huamei Inc.

4. 1 out of 4
Beijing Huamei Inc. Cnpc
5. 1 out of 1
Cnpc US Corporation
where one patent can have more than one assignee
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