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发明名称
Einrichtung zur Vorwaermung der Verbrennungsluft bei Herden
摘要
申请公布号
DE622948(C)
申请公布日期
1935.12.10
申请号
DENDATST51124D
申请日期
申请人
PAUL STEFFENS;PAUL STEFFENS
发明人
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主分类号
代理机构
代理人
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