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发明名称
DEVICE FOR CREATING WELL GRAVEL FILTER
摘要
申请公布号
SU1714092(A1)
申请公布日期
1992.02.23
申请号
SU19894678017
申请日期
1989.01.06
申请人
OSOBOE K BYURO PO PROEKTIROVANIYU NEFTEGAZODOBYVAYUSHCHIKH MASHIN OBORUDOVANIYA
发明人
ALESKEROV VALEKH F,SU;EFENDIEV OKTAJ I,SU;NABIEV ADYL D,SU;DZHABIEV SHAKHIN G,SU
分类号
E21B43/04
主分类号
E21B43/04
代理机构
代理人
主权项
地址
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