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화재 확산 방지를 위한 커버 필름
发明专利patent.status.granted
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卷宗概要
IPC 分类
B32B 17/2B32B 15/4B32B 15/20B32B 17/6B32B 17/10B32B 5/18B32B 7/27B32B 7/12C9D 123/4F16L 59/2
CPC 分类
B32B17/2B32B15/46B32B15/20B32B17/61B32B17/10614B32B17/1077B32B5/18B32B7/27B32B7/12C9D123/4F16L59/2