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发明名称
Signaling system
摘要
申请公布号
US2117739(A)
申请公布日期
1938.05.17
申请号
US19360083691
申请日期
1936.06.05
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MILLER RALPH L.
分类号
H04B1/66
主分类号
H04B1/66
代理机构
代理人
主权项
地址
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