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发明名称
Electronic switching systems
摘要
申请公布号
GB851652(A)
申请公布日期
1960.10.19
申请号
GB19580040946
申请日期
1958.12.18
申请人
GENERAL RADIO COMPANY
发明人
分类号
H03K23/82
主分类号
H03K23/82
代理机构
代理人
主权项
地址
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