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发明名称
摘要
申请公布号
DE2720747(B2)
申请公布日期
1980.02.14
申请号
DE19772720747
申请日期
1977.05.09
申请人
NIPPON ELECTRIC CO., LTD., TOKIO
发明人
KAGE, KOUZOU, TOKIO
分类号
H04L25/40;H03K5/00;H03L7/085;H04L7/033;(IPC1-7):H03K5/20;H03K1/17
主分类号
H04L25/40
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