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发明名称
Teräsovitelma iskevään poraan
摘要
申请公布号
FI20022043(A)
申请公布日期
2004.05.19
申请号
FI20020002043
申请日期
2002.11.18
申请人
HULKKONEN,TEIJO;PAASONEN,HANNU
发明人
HULKKONEN,TEIJO;PAASONEN,HANNU
分类号
E21B7/20;E21B10/32;E21B10/40;E21B10/64;(IPC1-7):E21B
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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