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发明名称
ELECTRIC SOUND DEVICE AND ITS MANUFACTURE
摘要
申请公布号
JPH02109409(A)
申请公布日期
1990.04.23
申请号
JP19890232674
申请日期
1989.09.07
申请人
SIEMENS AG
发明人
KAARU PURESUTEERE
分类号
H03H9/145;H03H3/08;H03H3/10
主分类号
H03H9/145
代理机构
代理人
主权项
地址
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