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发明名称
BROCA ROTATIVA
摘要
申请公布号
BR8102303(A)
申请公布日期
1981.12.08
申请号
BR19818102303
申请日期
1981.04.14
申请人
SANDVIK AB
发明人
MOREN R
分类号
E21B10/22;E21B10/25;F16J15/32;(IPC1-7):F16J15/16
主分类号
E21B10/22
代理机构
代理人
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地址
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