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发明名称
Signalsystem til Befordringsmidler.
摘要
申请公布号
DK44013(C)
申请公布日期
1931.04.20
申请号
DKD44013
申请日期
1929.12.20
申请人
KARL EMIL MORTENSEN BARTENS
发明人
KARL EMIL MORTENSEN BARTENS
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主分类号
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