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经营范围
发明名称
Roof drain
摘要
申请公布号
US2284416(A)
申请公布日期
1942.05.26
申请号
US19400352723
申请日期
1940.08.15
申请人
ARTHUR GORDON
发明人
GORDON ARTHUR
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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