Hits:
Affilication of Author(s):工程训练中心
Patent Applicant:Yan Yuntao,machunyuan,lianaidong
Type of Patent:实用新型
Application Number:201721584357.4
Number of Inventors:3
Service Invention or Not:no
Application Date:2017-11-23
Publication Date:2018-07-20
Authorization Date:2018-07-20
