26 Utility Patents
#616 in Shanghai
#4,144 in China
#114,930 in the World
Forward Citations = 37
Company Filing History:
Guangzhou Construction Engineering Co., Ltd
Shanghai Yesheng Mechanical & Electrical Control Technology Co., Ltd

4. 4 out of 3,059

5. 2 out of 4,959

where one patent can have more than one assignee
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