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发明名称
CLAMPS
摘要
申请公布号
EP0156575(A3)
申请公布日期
1986.06.25
申请号
EP19850301658
申请日期
1985.03.11
申请人
WALMSLEY, OWEN;EMMETT, ROBERT
发明人
WALMSLEY, OWEN
分类号
E21B19/06;E21B19/07;E21B19/10;E21B31/18;E21B31/20;F16B2/16;F16B7/04;F16B7/14;F16B21/10;F16L3/00;F16L37/092;F16L37/23;(IPC1-7):F16L21/08
主分类号
E21B19/06
代理机构
代理人
主权项
地址
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