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发明名称
Auto-selecting cross-bar telephone system
摘要
申请公布号
US2864890(A)
申请公布日期
1958.12.16
申请号
US19530397629
申请日期
1953.12.11
申请人
GENERAL TELEPHONE LABORATORIES, INCORPORATED
发明人
STEHLIK RUDOLPH FRANK
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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