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发明名称
Improvements in or relating to electronic switching devices
摘要
申请公布号
GB731127(A)
申请公布日期
1955.06.01
申请号
GB19530019576
申请日期
1953.07.14
申请人
TELEFONAKTIEBOLAGET L M ERICSSON
发明人
分类号
H03K17/88
主分类号
H03K17/88
代理机构
代理人
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