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发明名称
DEVICE FOR BREAKING ROCK
摘要
申请公布号
SU1546632(A1)
申请公布日期
1990.02.28
申请号
SU19884424596
申请日期
1988.05.13
申请人
NI PK I PO PROBLEMAM RAZVITIYA KANSKO-ACHINSKOGO UGOLNOGO BASSEJNA
发明人
BUDANOV VALERIJ E,SU
分类号
E21B1/34;E21C37/14
主分类号
E21B1/34
代理机构
代理人
主权项
地址
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