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发明名称
CORE BREAKER
摘要
申请公布号
SU844762(A1)
申请公布日期
1981.07.07
申请号
SU19792753631
申请日期
1979.04.05
申请人
DN OTDEL I MINERALNYKH RESURSOV MINISTERSTVA GEOLOGII UK SSR
发明人
KUSHNIR BORIS A,SU;KONDRATENKO VITALIJ M,SU;KIRICHENKO VLADIMIR G,SU;FILIPCHENKO TAMARA D,SU
分类号
E21B25/00;B28D1/26;(IPC1-7):E21B25/00
主分类号
E21B25/00
代理机构
代理人
主权项
地址
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