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发明名称
Improvements in or relating to service conduits in buildings
摘要
申请公布号
GB583517(A)
申请公布日期
1946.12.20
申请号
GB19440003117
申请日期
1945.02.15
申请人
ERNEST LEICESTER
发明人
分类号
E04F19/08;F16L3/00
主分类号
E04F19/08
代理机构
代理人
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