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发明名称
UNDERWATER ULTRASONIC WAVE RECEIVER
摘要
申请公布号
JPH03293900(A)
申请公布日期
1991.12.25
申请号
JP19900093952
申请日期
1990.04.11
申请人
OKI ELECTRIC IND CO LTD
发明人
TANI NOBUHIRO
分类号
H04R1/44;G01S7/52;G01S7/521;H04R1/00;H04R17/00
主分类号
H04R1/44
代理机构
代理人
主权项
地址
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