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发明名称
Improvements in and relating to electrical earthing tubes and the like
摘要
申请公布号
GB345815(A)
申请公布日期
1931.04.02
申请号
GB19300009653
申请日期
1930.03.26
申请人
ARTHUR BALDWIN SIMMONDS
发明人
分类号
H01Q1/48
主分类号
H01Q1/48
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