Affilication of Author(s):齐鲁交通学院
Patent Applicant:yaozhanyong,jianghongguang,zhangjizhe
Type of Patent:发明
Application Number:201910256400.1
Number of Inventors:3
Service Invention or Not:no
Application Date:2019-04-01
Publication Date:2020-04-17
Authorization Date:2020-04-17