7 Utility Patents
#166 in Qingdao
#19,002 in China
#596,499 in the World
Forward Citations = 1
Company Filing History:
Crrc Qingdao Sifang Rolling Stock Research Institute Co., Ltd.
China University of Petroleum
Other
4. 1 out of 438

5. 1 out of 5
Crrc Qingdao Sifang Rolling Stock Research Institute Co., Ltd. (cn)
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