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发明名称
HAULING PREVENTIVE HEARING AID
摘要
申请公布号
JPH02156944(A)
申请公布日期
1990.06.15
申请号
JP19890263127
申请日期
1989.10.11
申请人
PHILIPS GLOEILAMPENFAB:NV
发明人
ROORENSU HEORUJI HORUDEUIEIKU
分类号
A61F11/00;H04R25/00
主分类号
A61F11/00
代理机构
代理人
主权项
地址
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