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经营范围
发明名称
Improvements in or relating to electrical control circuits
摘要
申请公布号
GB1011962(A)
申请公布日期
1965.12.01
申请号
GB19640014677
申请日期
1964.04.09
申请人
NORTHERN ELECTRIC COMPANY LIMITED
发明人
分类号
H04M9/08
主分类号
H04M9/08
代理机构
代理人
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