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发明名称
FREMGANGSMAATE OG ANORDNING FOR BORING AV TUNNELLER MED SIRKELFORMET TVERRSNITT
摘要
申请公布号
NO793047(A)
申请公布日期
1980.03.25
申请号
NO19790003047
申请日期
1979.09.21
申请人
MANNESMANN DEMAG AG,
发明人
GJAKUN, LUKA,;GROTENHOEFER, HEINRICH,;HORST, HEINZ,
分类号
E21C;E21D;(IPC1-7):E21C/
主分类号
E21C
代理机构
代理人
主权项
地址
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