7 Utility Patents
#246 in Chengdu
#19,002 in China
#596,497 in the World
Forward Citations = 1
Company Filing History:
Southwest Petroleum University
Chengdu Leps Technology Co., Ltd
China Petroleum & Chemical Corporation
4. 2 out of 2
China Petroleum & Chemical Corporation Southwest Oil & Gas Company
where one patent can have more than one assignee
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