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经营范围
发明名称
ACOUSTIC DEVICE
摘要
申请公布号
EP0005037(A3)
申请公布日期
1979.11.14
申请号
EP19790300618
申请日期
1979.04.12
申请人
YOSHIRO NAKAMATSU
发明人
YOSHIRO NAKAMATSU
分类号
H04R1/16;H04R9/04;(IPC1-7):H04R9/04
主分类号
H04R1/16
代理机构
代理人
主权项
地址
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