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发明名称
PERCUSSIVE ACTION SLOT FORMING DEVICE
摘要
申请公布号
SU628304(A1)
申请公布日期
1978.10.15
申请号
SU19772505531
申请日期
1977.07.01
申请人
INST GEOTEKHNICHESKOI MEKHANI
发明人
POLUYANSKIJ STANISLAV A,SU;NESTERENKO VLADIMIR ,SU;SHMATOVSKIJ LEONID D,SU;ZORIN ANDREJ N,SU
分类号
E21B1/00;E21C25/02;(IPC1-7):E21C11/02;E21C3/00
主分类号
E21B1/00
代理机构
代理人
主权项
地址
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