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发明名称
Signaling system
摘要
申请公布号
US2745903(A)
申请公布日期
1956.05.15
申请号
US19520287094
申请日期
1952.05.10
申请人
GENERAL DYNAMICS CORPORATION
发明人
KESSLER FRANK
分类号
H04M5/08
主分类号
H04M5/08
代理机构
代理人
主权项
地址
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