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发明名称
Kredsløbsanordning for et hel- eller halvautomatisk Telefonsystem.
摘要
申请公布号
DK44998(C)
申请公布日期
1931.12.14
申请号
DKD44998
申请日期
1929.06.06
申请人
STANDARD ELECTRIC A.-S.
发明人
分类号
主分类号
代理机构
代理人
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