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发明名称
Signaling system
摘要
申请公布号
US1900016(A)
申请公布日期
1933.03.07
申请号
US19310522483
申请日期
1931.03.13
申请人
KANE JAMES M
发明人
KANE JAMES M.
分类号
H04L27/06
主分类号
H04L27/06
代理机构
代理人
主权项
地址
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