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发明名称
TELEPHONE EXCHANGE SWITCHING UNIT
摘要
申请公布号
IE16160(L)
申请公布日期
1939.12.20
申请号
IED16160
申请日期
1939.05.12
申请人
ASSOCIATED ELECTRIC LABORATORIES INC.;HANS SENGEBUSCH
发明人
分类号
H01H63/16;H04Q1/16;(IPC1-7):H01H63/16
主分类号
H01H63/16
代理机构
代理人
主权项
地址
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