Affilication of Author(s):土建与水利学院
Patent Applicant:sunrenjuan,guanyanhua,gezhi
Type of Patent:实用新型
Application Number:201721486460.5
Number of Inventors:3
Service Invention or Not:no
Application Date:2017-11-09
Publication Date:2018-05-25
Authorization Date:2018-05-25
Application Date: 2017-11-09
Publication Date: 2018-05-25
Authorization Date: 2018-05-25