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发明名称
摘要
申请公布号
JP2695011(B2)
申请公布日期
1997.12.24
申请号
JP19890184337
申请日期
1989.07.17
申请人
发明人
分类号
A61H23/02;H04R1/34;(IPC1-7):A61H23/02
主分类号
A61H23/02
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