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发明名称
SCHREITENDER STRECKENAUSBAU MIT MEHREREN HINTEREINANDER ANGEORDNETEN GESPANNEN
摘要
申请公布号
DE2552428(B2)
申请公布日期
1977.10.20
申请号
DE19752552428
申请日期
1975.11.22
申请人
发明人
分类号
E21D23/00;E21D23/06;(IPC1-7):E21D19/04
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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