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经营范围
发明名称
SOUND GENERATION CIRCUIT
摘要
申请公布号
JPS5648695(A)
申请公布日期
1981.05.01
申请号
JP19790124110
申请日期
1979.09.28
申请人
HITACHI LTD
发明人
TORII SHIYUUICHI;HARA HIDEO;NISHIHARA TATSUYA
分类号
H04R3/00
主分类号
H04R3/00
代理机构
代理人
主权项
地址
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