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发明名称
Roof construction
摘要
申请公布号
US2203314(A)
申请公布日期
1940.06.04
申请号
US19390273183
申请日期
1939.05.12
申请人
TOWSLEY IRVING S
发明人
TOWSLEY IRVING S.
分类号
E04B7/12
主分类号
E04B7/12
代理机构
代理人
主权项
地址
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