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发明名称
Bomb-proof roofs and building structures
摘要
申请公布号
GB530671(A)
申请公布日期
1940.12.17
申请号
GB19390025972
申请日期
1939.10.20
申请人
SAMUEL PHILIP PROWSE
发明人
分类号
E04H9/10
主分类号
E04H9/10
代理机构
代理人
主权项
地址
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