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发明名称
SCHUERF- UND FOERDEREINRICHTUNG EINER UNTERIRDISCH ARBEITENDEN VORTRIEBSVORRICHTUNG FUER ROHRLEITUNGEN.
摘要
申请公布号
AT41693(T)
申请公布日期
1989.04.15
申请号
AT19870101967T
申请日期
1987.02.12
申请人
SOLTAU, GERD, DR. ING.
发明人
SOLTAU, GERD, DR. ING.
分类号
E21B7/20;E21B21/10;E21B33/124;(IPC1-7):E21B7/20
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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