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发明名称
HEARING AID OF EAR INSERT TYPE
摘要
申请公布号
JPH04156842(A)
申请公布日期
1992.05.29
申请号
JP19900282441
申请日期
1990.10.20
申请人
RION CO LTD
发明人
NAKAGAWA TAKESHI;TANAKA TOSHIO
分类号
G02C11/06;A61F11/00;H04R25/00
主分类号
G02C11/06
代理机构
代理人
主权项
地址
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