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经营范围
发明名称
ULTRASONIC CERAMIC MICROPHONE
摘要
申请公布号
JPH0236700(A)
申请公布日期
1990.02.06
申请号
JP19880187219
申请日期
1988.07.27
申请人
MATSUSHITA ELECTRIC IND CO LTD
发明人
USUDA NOBUHIKO
分类号
H04R17/00
主分类号
H04R17/00
代理机构
代理人
主权项
地址
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