Affilication of Author(s):土建与水利学院
Patent Applicant:guanyanhua,sunrenjuan,gezhi
Type of Patent:发明
Application Number:201710165731.5
Number of Inventors:3
Service Invention or Not:no
Application Date:2017-03-20
Publication Date:2022-11-18
Authorization Date:2022-11-18
Application Date: 2017-03-20
Publication Date: 2022-11-18
Authorization Date: 2022-11-18