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发明名称
Dispositivo silenciador protector para los microaurículares telefónicos
摘要
申请公布号
ES49788(U)
申请公布日期
1955.10.01
申请号
ES19880000497U
申请日期
1955.08.29
申请人
SCIAMMA LIEBIG, CARLOS
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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