3 Utility Patents
#11,617 in Beijing
#45,150 in China
Forward Citations = 2
Company Filing History:
Liaoning University
Beijing Chengtian Hengye Coal Mine Equipment Co. Ltd

4. 1 out of 2
Liaoning Technical University
5. 1 out of 1
Cnpc East China Design Institute
where one patent can have more than one assignee
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