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发明名称
Stroemungssicherung
摘要
申请公布号
DE2113868(B1)
申请公布日期
1972.05.25
申请号
DE19712113868
申请日期
1971.03.23
申请人
JOH.VAILLANT KG
发明人
FELDMANN,ERNST
分类号
F24H9/20
主分类号
F24H9/20
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