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经营范围
发明名称
Improved roof drain
摘要
申请公布号
GB936687(A)
申请公布日期
1963.09.11
申请号
GB19610014795
申请日期
1961.04.24
申请人
JERROLD STUART NEWMAN
发明人
分类号
E04D13/04
主分类号
E04D13/04
代理机构
代理人
主权项
地址
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