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发明名称
Jatkuvaan sulaporaukseen syväporauksen yhteydessä tarkoitettu paineputkijohto, sekä menetelmä ja laite sen valmistamiseksi, sisääntyöntämiseksi ja purkamiseksi
摘要
申请公布号
FI95617(C)
申请公布日期
1996.02.26
申请号
FI19900006397
申请日期
1990.12.27
申请人
COMPISA AG,
发明人
WERNER,FOPPE
分类号
E21B7/10;E21B7/14;E21B17/10;E21B17/12;E21B17/20;E21B19/22;(IPC1-7):E21B7/14
主分类号
E21B7/10
代理机构
代理人
主权项
地址
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