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经营范围
发明名称
BUILDING BLOCK
摘要
申请公布号
GB9025069(D0)
申请公布日期
1991.01.02
申请号
GB19900025069
申请日期
1990.11.19
申请人
ECC CONSTRUCTION MATERIALS LIMITED
发明人
分类号
E01C5/06;E04C1/39
主分类号
E01C5/06
代理机构
代理人
主权项
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