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发明名称
Automatisk Telefonanlæg.
摘要
申请公布号
DK47989(C)
申请公布日期
1933.11.06
申请号
DKD47989
申请日期
1932.03.31
申请人
TELEFONAKTIEBOLAGET L. M. ERICSSON
发明人
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主分类号
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