25 Utility and 7 Design Patents
#1,859 in Beijing
#4,362 in China
#122,017 in the World
rank by utility patentsForward Citations = 79
Company Filing History:


Beijing Tonglanhai Technology Co., Ltd
4. 3 out of 3,059

5. 3 out of 5
Qingdao Topscomm Communication Co., Ltd
where one patent can have more than one assignee
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