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화재 확산 방지 시스템
发明专利patent.status.granted
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卷宗概要
IPC 分类
A62C 3/7A62C 2/10A62C 2/24A62C 3/16A62C 35/2A62C 35/68A62C 37/38A62C 99/B1D 53/78E4H 6/42
CPC 分类
A62C3/7A62C2/10A62C2/24A62C3/16A62C35/2A62C35/68A62C37/38A62C99/72A62C99/9B1D53/78E4H6/42