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经营范围
发明名称
PIEZOOELECTRIC SPEAKER
摘要
申请公布号
JPS5628600(A)
申请公布日期
1981.03.20
申请号
JP19790104438
申请日期
1979.08.16
申请人
SEIKOSHA KK
发明人
MAEDA KIYOUICHI
分类号
H04R17/00;(IPC1-7):H04R17/00
主分类号
H04R17/00
代理机构
代理人
主权项
地址
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