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发明名称
Improvements in or relating to the manufacture of multiple way ducts or conduits
摘要
申请公布号
GB507427(A)
申请公布日期
1939.06.13
申请号
GB19370034475
申请日期
1937.12.13
申请人
CHARLES CYRIL HALKYARD
发明人
分类号
H02G9/06
主分类号
H02G9/06
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