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发明名称
METHOD OF EXTRACTION OF INTER-CHAMBER PILLARS
摘要
申请公布号
SU1645516(A1)
申请公布日期
1991.04.30
申请号
SU19864163093
申请日期
1986.12.16
申请人
KHIMIKO-METALLURGICHESKIJ I AN KAZSSR
发明人
BERKALIEV BAZYLBEK T,SU;BORGER VIKTOR G,SU;SHIROV VYACHESLAV YU,SU;RAKHIMZHANOV SAJRAN R,SU;NAURYZBAEV ERKEN O,SU;TYUMENTSEV ALEKSANDR V,SU
分类号
E21C41/22
主分类号
E21C41/22
代理机构
代理人
主权项
地址
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