Affilication of Author(s):齐鲁交通学院
Patent Applicant:jianghongguang,zhangjizhe,Liang Ming,yaozhanyong
Type of Patent:实用新型
Application Number:201920258522.X
Number of Inventors:4
Service Invention or Not:no
Application Date:2019-02-28
Publication Date:2019-12-06
Authorization Date:2019-12-06