3 Utility Patents
#11,538 in Beijing
#44,764 in China
Forward Citations = 33
Company Filing History:
Beijing Technology of Printing Research Institute Chinese

Beijing Building Materials and Geological Engineering Co.ltd.
4. 1 out of 1
Beijing City Construction Technology Promotion Association
5. 1 out of 1
Sinoma Geological Engineering Exploration and Research Institute Co.
where one patent can have more than one assignee
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