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发明名称
DISPOSITIVO SONORO PARA TARJETAS Y LIBROS
摘要
申请公布号
ES275901(Y)
申请公布日期
1985.11.01
申请号
ES20010002759U
申请日期
1983.11.23
申请人
BENITO MARTINEZ MARIA
发明人
分类号
H04R23/00;(IPC1-7):H04R23/00
主分类号
H04R23/00
代理机构
代理人
主权项
地址
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