ULTRASONIC CERAMIC MICROPHONE,申请号JP19880161721-传众专利搜索

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发明名称	ULTRASONIC CERAMIC MICROPHONE
摘要
申请公布号	JPH0211099(A)	申请公布日期	1990.01.16
申请号	JP19880161721	申请日期	1988.06.29
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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