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发明名称
ROCK BREAKER
摘要
申请公布号
SU1740601(A1)
申请公布日期
1992.06.15
申请号
SU19894746206
申请日期
1989.10.09
申请人
YAKOVLEV GENNADIJ M,SU;EMCHITSKIJ ANATOLIJ A,SU;DUBIN ANATOLIJ A,SU;PATENKOV ALEKSANDR YA,SU
发明人
YAKOVLEV GENNADIJ M,SU;EMCHITSKIJ ANATOLIJ A,SU;DUBIN ANATOLIJ A,SU;PATENKOV ALEKSANDR YA,SU
分类号
E21B4/14;E21B4/10
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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