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发明名称
Electronic switching system
摘要
申请公布号
GB601508(A)
申请公布日期
1948.05.06
申请号
GB19450027398
申请日期
1945.10.18
申请人
MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED
发明人
分类号
H03F3/68
主分类号
H03F3/68
代理机构
代理人
主权项
地址
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