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经营范围
发明名称
Pipe joints
摘要
申请公布号
GB659505(A)
申请公布日期
1951.10.24
申请号
GB19490008203
申请日期
1949.03.25
申请人
ALBERT LESLIE STONE
发明人
分类号
E21B17/042
主分类号
E21B17/042
代理机构
代理人
主权项
地址
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