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经营范围
发明名称
SWITCHING CIRCUITS
摘要
申请公布号
GB1563130(A)
申请公布日期
1980.03.19
申请号
GB19760049964
申请日期
1976.11.30
申请人
WESTERN ELECTRIC CO
发明人
分类号
H04J1/14;H04M3/02;H04M13/00;H04M19/04;H04M19/06;(IPC1-7):H02M3/335;H02J7/00
主分类号
H04J1/14
代理机构
代理人
主权项
地址
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