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发明名称
Mcrófono telefónico con especiales dispositivos encauzadores y silenciadores
摘要
申请公布号
ES51340(Y)
申请公布日期
1957.05.16
申请号
ES19400000513U
申请日期
1955.11.29
申请人
PAPAHA, MICHELANGELO
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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