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发明名称
AUTOMATIC TELEPHONY: SELECTION SYSTEM
摘要
申请公布号
IE21761(L)
申请公布日期
1950.12.30
申请号
IE19500000293
申请日期
1950.06.30
申请人
STANDARD TELEPHONES AND CABLES LTD;ASSIGNEES OF INTERNATIONAL STANDARD ELECTRIC CORP
发明人
分类号
(IPC1-7):H04Q3/50
主分类号
(IPC1-7):H04Q3/50
代理机构
代理人
主权项
地址
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