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发明名称
Koblingsanordning til Telefonanlæg.
摘要
申请公布号
DK45140(C)
申请公布日期
1932.01.25
申请号
DKD45140
申请日期
1931.03.18
申请人
TELEFONAKTIEBOLAGET L. M. ERICSSON
发明人
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主分类号
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