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发明名称
BIT
摘要
申请公布号
SU610996(A1)
申请公布日期
1978.06.15
申请号
SU19731921174
申请日期
1973.05.16
申请人
INST GORNOGO DELA IM.A.A.SKOCHINSKOGO
发明人
DOLGOV VIKTOR L,SU
分类号
E21C27/24;(IPC1-7):E21C27/24
主分类号
E21C27/24
代理机构
代理人
主权项
地址
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