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发明名称
Verfahren zur Herstellung eines Unterwassertunnels aus einzelnen versenkbaren Rohrschuessen
摘要
申请公布号
DE492669(C)
申请公布日期
1930.03.12
申请号
DE1923S061848D
申请日期
1923.01.10
申请人
SIEMENS-BAUUNION G.M.B.H., KOMM.-GES.
发明人
GUENTHEL ERNST
分类号
E02D29/073
主分类号
E02D29/073
代理机构
代理人
主权项
地址
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