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发明名称
Improvements in the Repair of Seals for Gas Pipe Joints
摘要
申请公布号
GB1167220(A)
申请公布日期
1969.10.15
申请号
GB19670037424
申请日期
1967.08.15
申请人
THE GAS COUNCIL
发明人
DAVID CAMPBELL HOWARD
分类号
F16L55/172;F16L55/178
主分类号
F16L55/172
代理机构
代理人
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地址
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