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经营范围
发明名称
Frequency discriminator circuit
摘要
申请公布号
US2791690(A)
申请公布日期
1957.05.07
申请号
US19550512974
申请日期
1955.06.03
申请人
INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
发明人
DODINGTON SVEN H. M.
分类号
H04J1/08
主分类号
H04J1/08
代理机构
代理人
主权项
地址
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