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经营范围
发明名称
PIPE CONNECTOR
摘要
申请公布号
GB8406580(D0)
申请公布日期
1984.04.18
申请号
GB19840006580
申请日期
1984.03.13
申请人
WALMSLEY, O
发明人
分类号
E21B19/06;E21B31/18;E21B31/20;F16B2/16;F16B7/14;F16L3/00;F16L21/08;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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