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发明名称
PENETRATION METER
摘要
申请公布号
SU968358(A1)
申请公布日期
1982.10.23
申请号
SU19803210206
申请日期
1980.11.26
申请人
GROZNENSKIJ NEFTYANOJ I IM.AKAD.M.D.MILLIONSHCHIKOVA
发明人
AKHMADOV DAUD D,SU;KARPUKHIN BORIS D,SU;SAIDOV ABDULA-VAKHAB-AKHMEDOVICH,SU
分类号
E21B45/00;E21B44/00;(IPC1-7):E21B44/00
主分类号
E21B45/00
代理机构
代理人
主权项
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