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发明名称
Porauslaitteen teräasetelma ja menetelmä porausjätPorauslaitteen teräasetelma ja menetelmä porausjätteen poiskuljettamiseksi teen poiskuljettamiseksi
摘要
申请公布号
FI945367(A0)
申请公布日期
1994.11.14
申请号
FI19940005367
申请日期
1994.11.14
申请人
ILOMAEKI, VALTO
发明人
ILOMAEKI, VALTO
分类号
E21B10/38;E21B10/64;E21B21/12;(IPC1-7):E21C
主分类号
E21B10/38
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代理人
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