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经营范围
发明名称
Improvements in pipe joints
摘要
申请公布号
GB458441(A)
申请公布日期
1936.12.21
申请号
GB19350017848
申请日期
1935.06.21
申请人
PERCY GRAHAM JOHNSON
发明人
分类号
F16L17/04
主分类号
F16L17/04
代理机构
代理人
主权项
地址
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