内置空心方钢管的压型钢板混凝土双向组合楼板
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双向组合楼板
Type of Patent:发明
State of Patent:#N/A
Application Number:201511027039.3
Number of Inventors:4
Service Invention or Not:no
Application Date:2015-12-31
First Author:WK
