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发明名称
Menetelmä ja laitteisto maanalaiseen poraukseen
摘要
申请公布号
FI990589(A)
申请公布日期
2000.09.17
申请号
FI19990000589
申请日期
1999.03.16
申请人
RD TRENCHLESS LTD OY,
发明人
VAELISALO,RISTO
分类号
E21B4/14;E21B7/28;E21B21/00;(IPC1-7):E21B
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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