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Affilication of Author(s):机械工程学院
Patent Applicant:Wan Yi,liangxichang,xinqianqian
Type of Patent:实用新型
Application Number:2019209714908
Number of Inventors:3
Service Invention or Not:no
Application Date:2019-06-25
Publication Date:2020-02-14
Authorization Date:2020-02-14