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发明名称
VORRICHTUNG ZUM ABDICHTEN DES RINGSPALTES ZWISCHEN SCHILDMANTEL UND AUSKLEIDUNG BEI VORTRIEBSSCHILDEN
摘要
申请公布号
DE2555780(A1)
申请公布日期
1977.06.23
申请号
DE19752555780
申请日期
1975.12.11
申请人
WAYSS & FREYTAG AG
发明人
分类号
E21D9/06;(IPC1-7):E21D9/06
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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