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经营范围
发明名称
PERFECTIONNEMENT AUX APPAREILS DE CIRCULATION DE FLUIDE
摘要
申请公布号
FR2751373(B1)
申请公布日期
2002.12.06
申请号
FR19970009092
申请日期
1997.07.17
申请人
CAMCO INTERNATIONAL INC
发明人
READ DENNIS M
分类号
E21B21/10;E21B34/06;(IPC1-7):E21B21/08;E21B7/04;E21B34/10;E21B34/16
主分类号
E21B21/10
代理机构
代理人
主权项
地址
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