返回搜索
档案
내화성 및 내진성을 갖는 조립식 벽돌
发明专利patent.status.granted
1浏览
§ Ⅰ
卷宗概要
IPC 分类
C4B 28/6B28B 1/14B28B 11/24B28B 7/C4B 14/20C4B 14/26C4B 14/30C4B 16/6C4B 24/24C4B 35/66C4B 111/28
CPC 分类
C4B28/6B28B1/14B28B11/245B28B7/79C4B14/202C4B14/204C4B14/26C4B14/303C4B16/691C4B24/24C4B35/66