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发明名称
METHOD OF MINING A COAL SEAM
摘要
申请公布号
SU1323718(A1)
申请公布日期
1987.07.15
申请号
SU19864038378
申请日期
1986.02.04
申请人
INST UGLYA SO AN SSSR
发明人
IGNATOV EVGENIJ V,SU;ZHDANKIN NIKOLAJ A,SU
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主分类号
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