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发明名称
DEVICE FOR BREAKING ROCK
摘要
申请公布号
SU1488467(A1)
申请公布日期
1989.06.23
申请号
SU19874269141
申请日期
1987.06.29
申请人
LENIN VLADIMIR A,SU
发明人
LENIN VLADIMIR A,SU
分类号
E21C25/60
主分类号
E21C25/60
代理机构
代理人
主权项
地址
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