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经营范围
发明名称
Automatisk Linieblokeringsanordning til Jærnbaner.
摘要
申请公布号
DK42193(C)
申请公布日期
1930.05.12
申请号
DKD42193
申请日期
1928.08.20
申请人
TELEFONAPPARATFABRIKANTER TELEFONAKTIEBOLAGET L. M. ERICSSON
发明人
分类号
主分类号
代理机构
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