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发明名称
METHOD OF EXCAVATING INCOMBUSTIBLE QUARRY AND MINE DUMPS
摘要
申请公布号
SU642480(A1)
申请公布日期
1979.01.15
申请号
SU19772509148
申请日期
1977.07.12
申请人
INST GEOTEKHNICHESKOI MEKHANI
发明人
TARTAKOVSKIJ BORIS N,SU
分类号
(IPC1-7):E21C41/02
主分类号
(IPC1-7):E21C41/02
代理机构
代理人
主权项
地址
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