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经营范围
发明名称
HEADPHONE DEVICE
摘要
申请公布号
JPH10234712(A)
申请公布日期
1998.09.08
申请号
JP19970045843
申请日期
1997.02.28
申请人
RION CO LTD
发明人
KUROSAWA TAKAHIRO
分类号
A61B5/12;H04R1/10;(IPC1-7):A61B5/12
主分类号
A61B5/12
代理机构
代理人
主权项
地址
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