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经营范围
发明名称
ROCK BREAKING DEVICE
摘要
申请公布号
SU1654568(A1)
申请公布日期
1991.06.07
申请号
SU19874324196
申请日期
1987.11.04
申请人
INST GORNOGO DELA SO AN SSSR
发明人
AVERYANOV SERAFIM F,SU;DYAKOV BORIS V,SU;LEBEDEV ANATOLIJ V,SU
分类号
E21C37/08
主分类号
E21C37/08
代理机构
代理人
主权项
地址
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