Title:一种严寒地区隧道冬季施工洞口保温门
Institution:岩土与地下工程研究院
Type of Patent:Utility models
Application Number:201420826428.7
Number of Inventors:2
Service Invention or Not:No
Application Date:2014-12-22
Publication Date:2015-07-22
Authorization Date:2015-07-22
Release Time:2019-04-15