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发明名称
ULTRASONIC TRANSDUCER
摘要
申请公布号
AU539636(B2)
申请公布日期
1984.10.11
申请号
AU19800061780
申请日期
1980.08.27
申请人
OKI ELECTRIC INDUSTRY CO. LTD.
发明人
HIROSHI KAMATA
分类号
H04R1/20;B06B1/06;G10K11/00;H04R1/22;H04R1/44;(IPC1-7):H04R1/38;H04R1/40
主分类号
H04R1/20
代理机构
代理人
主权项
地址
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