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发明名称
CYLINDRICAL ACOUSTIC TRANSDUCER
摘要
申请公布号
JPH0252597(A)
申请公布日期
1990.02.22
申请号
JP19880203460
申请日期
1988.08.16
申请人
SUYAMA IKUO
发明人
SUYAMA IKUO
分类号
H04R1/30;G10K11/18
主分类号
H04R1/30
代理机构
代理人
主权项
地址
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