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发明名称
UN DISPOSITIVO DE SEGURIDAD PARA APARATOS TELEFONICOS.
摘要
申请公布号
ES173217(Y)
申请公布日期
1972.09.01
申请号
ES19710173217U
申请日期
1971.10.02
申请人
VALERA DEMARIA
发明人
分类号
H04M
主分类号
H04M
代理机构
代理人
主权项
地址
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