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发明名称
Device for venting shingled roofs
摘要
申请公布号
US2272804(A)
申请公布日期
1942.02.10
申请号
US19400349557
申请日期
1940.08.02
申请人
HUDSON HERBERT W
发明人
HUDSON HERBERT W.
分类号
E04D13/17
主分类号
E04D13/17
代理机构
代理人
主权项
地址
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