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发明名称
摘要
申请公布号
JPS627722(B2)
申请公布日期
1987.02.19
申请号
JP19780090471
申请日期
1978.07.26
申请人
HITACHI LTD
发明人
SEKI KUNIO;TAKESHITA RITSUJI
分类号
H03F1/42;H03F1/52;H03F3/20;H03F3/30
主分类号
H03F1/42
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代理人
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