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发明名称
Modulation
摘要
申请公布号
US2023780(A)
申请公布日期
1935.12.10
申请号
US19320608414
申请日期
1932.04.30
申请人
COMPAGNIE GENERALE DE TELEGRAPHIE
发明人
COTTET ANDRE
分类号
H03C1/24
主分类号
H03C1/24
代理机构
代理人
主权项
地址
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