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发明名称
PERCUSSIVE HYDRAULIC DEVICE
摘要
申请公布号
SU1602980(A1)
申请公布日期
1990.10.30
申请号
SU19884617822
申请日期
1988.12.09
申请人
DO POLT INSTITUT
发明人
TIMOSHENKO GRIGORIJ M,SU;YATSENKO ALEKSANDR F,SU;SELIVRA SERGEJ A,SU;KOROSHCHENKO SERGEJ A,SU
分类号
E21C37/00
主分类号
E21C37/00
代理机构
代理人
主权项
地址
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