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发明名称
BELUEFTUNGSANORDNUNG FUER U-BAHNEN SOWIE VERFAHREN ZUM BETREIBEN DER BELUEFTUNGSANORDNUNG
摘要
申请公布号
DE2243846(B2)
申请公布日期
1977.03.17
申请号
DE19722243846
申请日期
1972.09.07
申请人
发明人
分类号
E21F1/00;(IPC1-7):E21F1/00
主分类号
E21F1/00
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