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发明名称
DRIP-PROOF TYPE ULTRASONIC MICROPHONE
摘要
申请公布号
JPH04132400(A)
申请公布日期
1992.05.06
申请号
JP19900253185
申请日期
1990.09.21
申请人
MATSUSHITA ELECTRIC WORKS LTD
发明人
YAMAZAKI YOSHINORI
分类号
H04R1/00;G01S7/52;H04R17/10
主分类号
H04R1/00
代理机构
代理人
主权项
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