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发明名称
METHOD OF MINING BED MINERAL DEPOSITS
摘要
申请公布号
SU1752957(A1)
申请公布日期
1992.08.07
申请号
SU19904833998
申请日期
1990.06.04
申请人
URALSKIJ VNI PI GALURGII
发明人
VOROBEV VLADIMIR A,SU
分类号
E21C41/18
主分类号
E21C41/18
代理机构
代理人
主权项
地址
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