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经营范围
发明名称
An electronic phase failure, earth leakage and unbalanced overload protection device
摘要
申请公布号
GB734326(A)
申请公布日期
1955.07.27
申请号
GB19530018430
申请日期
1953.07.03
申请人
GEOFFREY STANLEY CHAPMAN;JOHN STEPHEN HARTWELL GOODALL
发明人
分类号
H02H3/34
主分类号
H02H3/34
代理机构
代理人
主权项
地址
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