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发明名称
SOUND-ABSORBING CONCRETE BOARD
摘要
申请公布号
KR890005207(B1)
申请公布日期
1989.12.18
申请号
KR19860003278
申请日期
1986.04.24
申请人
LEE KYONG-DOO
发明人
LEE KYONG-DOO
分类号
E04C2/26;(IPC1-7):E04C2/26
主分类号
E04C2/26
代理机构
代理人
主权项
地址
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