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发明名称
DRAINAGE SYSTEM
摘要
申请公布号
GB9117007(D0)
申请公布日期
1991.09.18
申请号
GB19910017007
申请日期
1991.08.07
申请人
HEPWORTH BUILDING PROD
发明人
分类号
E04D13/068;E04D13/072
主分类号
E04D13/068
代理机构
代理人
主权项
地址
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