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发明名称
Signaling system
摘要
申请公布号
US2902684(A)
申请公布日期
1959.09.01
申请号
US19560602783
申请日期
1956.08.08
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
MORK RALPH G.
分类号
G09G1/22;H04L7/08
主分类号
G09G1/22
代理机构
代理人
主权项
地址
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