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发明名称
Signal transmitting means
摘要
申请公布号
US2248819(A)
申请公布日期
1941.07.08
申请号
US19380248069
申请日期
1938.01.20
申请人
THE TELEREGISTER CORPORATION
发明人
HASELTON MERTON L.
分类号
H04L12/18
主分类号
H04L12/18
代理机构
代理人
主权项
地址
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