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发明名称
NON-DIRECTIONAL UNDERWATER ULTRASONIC TRANSDUCER
摘要
申请公布号
JPS6318798(A)
申请公布日期
1988.01.26
申请号
JP19860162263
申请日期
1986.07.09
申请人
NEC CORP
发明人
KONNO TADASHI;INOUE TAKESHI
分类号
H04R17/00;H04R1/44
主分类号
H04R17/00
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