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发明名称
Tunnelling shield tail seal
摘要
申请公布号
IT1226889(B)
申请公布日期
1991.02.21
申请号
IT19860012589
申请日期
1986.11.28
申请人
GEWERKSCHAFT EISENHUTTE WESTFALIA GMBH
发明人
HANS GUNTER FOLLERT;THOMAS KRAMER;HANS JUTTE
分类号
E21D;(IPC1-7):E21D/
主分类号
E21D
代理机构
代理人
主权项
地址
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