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发明名称
Doppelte Luftschleuse fuer den Drucklufttunnelbau
摘要
申请公布号
DE1222099(B)
申请公布日期
1966.08.04
申请号
DE1963F041436
申请日期
1963.11.30
申请人
J. S. FRIES SOHN
发明人
HORNOFF LEONHARD
分类号
E21D9/00;E21F1/14
主分类号
E21D9/00
代理机构
代理人
主权项
地址
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