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发明名称
TECLADO DE SELECCION PARA CENTRALITAS TELEFONICAS.
摘要
申请公布号
ES146785(Y)
申请公布日期
1970.03.01
申请号
ES19850001467U
申请日期
1969.03.21
申请人
发明人
分类号
H04M;(IPC1-7):04M/
主分类号
H04M
代理机构
代理人
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地址
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