内置十字交叉空心方钢管的混凝土组合板
Date:2020-12-09 clicks:
Patent Applicant:王琨
Patent description:内置十字交叉空心方钢管的混凝土组合板
Type of Patent:发明
State of Patent:#N/A
Application Number:201510299934.4
Number of Inventors:6
Service Invention or Not:no
Application Date:2015-06-04
First Author:WK
