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发明名称
Roof construction
摘要
申请公布号
US1853231(A)
申请公布日期
1932.04.12
申请号
US19290399766
申请日期
1929.10.15
申请人
PAUL SCHONERT
发明人
SCHONERT PAUL
分类号
E04D13/14
主分类号
E04D13/14
代理机构
代理人
主权项
地址
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