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发明名称
(A) ;HEARING AID
摘要
申请公布号
JPS61186100(U)
申请公布日期
1986.11.20
申请号
JP19850070402U
申请日期
1985.05.13
申请人
发明人
分类号
F27D3/15;B22D37/00;B22D43/00;(IPC1-7):F27D3/15
主分类号
F27D3/15
代理机构
代理人
主权项
地址
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