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发明名称
MINERAL-WINNING METHOD
摘要
申请公布号
SU836341(A1)
申请公布日期
1981.06.07
申请号
SU19772525747
申请日期
1977.09.21
申请人
UFIMSKIJ NEFTYANOJ INSTITUT
发明人
SHAKHOVKIN VIKTOR M,SU;BELOV EVGENIJ E,SU
分类号
E21B43/28;(IPC1-7):E21B43/28
主分类号
E21B43/28
代理机构
代理人
主权项
地址
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