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发明名称
摘要
申请公布号
JPH0293891(U)
申请公布日期
1990.07.25
申请号
JP19890003105U
申请日期
1989.01.13
申请人
发明人
分类号
H04R1/02;G10K11/16;(IPC1-7):H04R1/02
主分类号
H04R1/02
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