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发明名称
ROOFING CONSTRUCTION
摘要
申请公布号
GB9002341(D0)
申请公布日期
1990.04.04
申请号
GB19900002341
申请日期
1990.02.02
申请人
AVEN BUILDING MAINTENANCE SERVICES LIMITED
发明人
分类号
E04B7/02;E04D3/36
主分类号
E04B7/02
代理机构
代理人
主权项
地址
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