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콘크리트 주입 보수제
发明专利审中
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§ Ⅰ
卷宗概要
IPC 分类
C4B 41/61C4B 41/45C4B 41/48C4B 41/50C9D 1/8C9D 133/C9D 5/34C9D 7/61C9D 7/63E4G 23/2C4B 111/72
CPC 分类
C4B41/61C4B41/4576C4B41/483C4B41/501C4B41/5041C4B41/5076C9D1/8C9D133/C9D5/34C9D7/61C9D7/63
IPC 分类
CPC 分类