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发明名称
摘要
申请公布号
JPS5521520(B2)
申请公布日期
1980.06.10
申请号
JP19720082142
申请日期
1972.08.18
申请人
发明人
分类号
H03G3/02;H03G3/34;H04H20/89;H04S3/00
主分类号
H03G3/02
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