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发明名称
An improved subaqueous tunnel and method for its construction
摘要
申请公布号
GB388642(A)
申请公布日期
1933.03.02
申请号
GB19320018023
申请日期
1932.06.25
申请人
AUGUST GUNDERSEN
发明人
分类号
E02D29/063
主分类号
E02D29/063
代理机构
代理人
主权项
地址
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