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发明名称
METHOD OF PREPARING GENTLY-SLOPING COAL SEAMS
摘要
申请公布号
SU1456570(A1)
申请公布日期
1989.02.07
申请号
SU19874272046
申请日期
1987.06.30
申请人
PROIZV OB "YUZHKUZBASSUGOL"
发明人
POPKOV MIKHAIL P,SU;YALEVSKIJ VLADLEN D,SU;MALYSHEV YURIJ N,SU;PINIGIN YURIJ K,SU;BURCHAKOV ANATOLIJ S,SU
分类号
主分类号
代理机构
代理人
主权项
地址
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