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发明名称
Signaleringskobling til telefonanlæg.
摘要
申请公布号
DK75511(C)
申请公布日期
1953.03.02
申请号
DK19470000669
申请日期
1947.02.15
申请人
AUTOMATIC TELEPHONE & ELECTRIC COMPANY LIMITED
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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