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发明名称
Highly selective keying circuit
摘要
申请公布号
US2786138(A)
申请公布日期
1957.03.19
申请号
US19530397496
申请日期
1953.12.10
申请人
WHERRY DONALD M
发明人
WHERRY DONALD M.
分类号
H04L27/06
主分类号
H04L27/06
代理机构
代理人
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