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发明名称
Squelching system
摘要
申请公布号
US2681989(A)
申请公布日期
1954.06.22
申请号
US19520269305
申请日期
1952.01.31
申请人
INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
发明人
CUNNIFF THOMAS W.
分类号
H04B3/20
主分类号
H04B3/20
代理机构
代理人
主权项
地址
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