内置空心方钢管的压型钢板混凝土单向组合楼板
Date:2020-12-09 clicks:
Patent Applicant:王琨
Patent description:内置空心方钢管的压型钢板混凝土单向组合楼板
Type of Patent:实用新型
State of Patent:有效
Application Number:201521133491.3
Number of Inventors:5
Service Invention or Not:no
Application Date:2015-12-31
Authorization Date:2016-06-15
First Author:WK
