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经营范围
发明名称
SOUND VOLUME CONTROL CIRCUIT
摘要
申请公布号
JPH0457277(A)
申请公布日期
1992.02.25
申请号
JP19900164491
申请日期
1990.06.22
申请人
SONY CORP
发明人
TAJIMA SHIGERU
分类号
G11B20/04;G11B31/00;H03G1/02;H04N5/44;H04N5/775
主分类号
G11B20/04
代理机构
代理人
主权项
地址
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