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发明名称
ULTRASONIC CERAMIC MICROPHONE
摘要
申请公布号
JPH02116300(A)
申请公布日期
1990.04.27
申请号
JP19880269888
申请日期
1988.10.26
申请人
MATSUSHITA ELECTRIC IND CO LTD
发明人
UTSUNOMIYA RYOICHI
分类号
H04R17/00;G01S7/52;G01S7/521
主分类号
H04R17/00
代理机构
代理人
主权项
地址
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