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经营范围
发明名称
DUCTING
摘要
申请公布号
GB1407796(A)
申请公布日期
1975.09.24
申请号
GB19710055551
申请日期
1971.11.30
申请人
DANIEL CONSTRUCTION CO INTERNATIONAL
发明人
分类号
F16L23/14;(IPC1-7):F16L23/00
主分类号
F16L23/14
代理机构
代理人
主权项
地址
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