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发明名称
Transmission system
摘要
申请公布号
US1820898(A)
申请公布日期
1931.08.25
申请号
US19290338235
申请日期
1929.02.07
申请人
FEDERAL TELEGRAPH COMPANY
发明人
BARONE SALVATORE A.
分类号
H03C1/52
主分类号
H03C1/52
代理机构
代理人
主权项
地址
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