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发明名称
TELÉFONO ELECTROSTáTICO
摘要
申请公布号
ES121911(A1)
申请公布日期
1931.03.16
申请号
ES19110001219
申请日期
1931.02.27
申请人
VOGT, HANS
发明人
分类号
(IPC1-7):H04
主分类号
(IPC1-7):H04
代理机构
代理人
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地址
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