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发明名称
DUCTING
摘要
申请公布号
GB1552916(A)
申请公布日期
1979.09.19
申请号
GB19760000493
申请日期
1977.01.07
申请人
HARGEAVES & SONS LTD HENRY
发明人
分类号
F16L9/22;(IPC1-7):F16L9/22
主分类号
F16L9/22
代理机构
代理人
主权项
地址
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