4 Utility Patents
#9,292 in Beijing
#33,688 in China
Forward Citations = 14
Company Filing History:

Beijing Orient Vacuum Electric Co., Ltd.
Beijing Kedong Power Control System Co., Ltd
4. 1 out of 2
Nari Group Corporation
5. 1 out of 30
Bitmain Technologies Limited
where one patent can have more than one assignee
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