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发明名称
Sicherungseinrichtung fuer den Eisenbahnbetrieb
摘要
申请公布号
DE525933(C)
申请公布日期
1931.05.30
申请号
DE1929B145344D
申请日期
1929.08.25
申请人
JOHANNES BEHMER
发明人
分类号
B61L13/04
主分类号
B61L13/04
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