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发明名称
Signaling
摘要
申请公布号
US1794878(A)
申请公布日期
1931.03.03
申请号
US19280303095
申请日期
1928.08.30
申请人
RADIO CORPORATION
发明人
WEAGANT ROY ALEXANDER
分类号
H04L27/20;H04L27/233
主分类号
H04L27/20
代理机构
代理人
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地址
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