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发明名称
Kredsløbsanordning ved et hel- eller halvautomatisk Telefonsystem.
摘要
申请公布号
DK44905(C)
申请公布日期
1931.11.23
申请号
DKD44905
申请日期
1926.08.23
申请人
STANDARD ELECTRIC A.-S.
发明人
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