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发明名称
Secret signaling system
摘要
申请公布号
US2463503(A)
申请公布日期
1949.03.08
申请号
US19420468345
申请日期
1942.12.09
申请人
TUNG-SOL LAMP WORKS, INC.
发明人
ATKINS CARL EDWARD
分类号
H04K1/02
主分类号
H04K1/02
代理机构
代理人
主权项
地址
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