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发明名称
OPEN TYPE ULTRASONIC MICROPHONE
摘要
申请公布号
JPH05153694(A)
申请公布日期
1993.06.18
申请号
JP19910309607
申请日期
1991.11.26
申请人
MATSUSHITA ELECTRIC WORKS LTD
发明人
YAMAZAKI YOSHINORI
分类号
H04R17/00;H04R17/10
主分类号
H04R17/00
代理机构
代理人
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地址
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