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发明名称
COMPLESSO A CUNEI,DI TIPO ROTATIVO,A MOTORE
摘要
申请公布号
IT1065505(B)
申请公布日期
1985.02.25
申请号
IT19760030753
申请日期
1976.12.22
申请人
BJ HUGHES INC.
发明人
分类号
E21B3/04;E21B19/06;E21B19/10;(IPC1-7):E21B/
主分类号
E21B3/04
代理机构
代理人
主权项
地址
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