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发明名称
APPARECCHIO PER LA PERFORAZIONE DI ROCCE
摘要
申请公布号
IT1240165(B)
申请公布日期
1993.11.27
申请号
IT19900067246
申请日期
1990.04.03
申请人
OY TAMPELLA AB
发明人
RAJALA RAUNO
分类号
E21B19/08;E21B7/02;E21B15/00;E21B15/04;E21D9/10;(IPC1-7):E21C
主分类号
E21B19/08
代理机构
代理人
主权项
地址
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