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经营范围
发明名称
Thermal relay for polyphase currents
摘要
申请公布号
GB994436(A)
申请公布日期
1965.06.10
申请号
GB19610037189
申请日期
1961.10.17
申请人
NORMACEM
发明人
分类号
H01H83/22
主分类号
H01H83/22
代理机构
代理人
主权项
地址
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