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经营范围
发明名称
Lueftungseinrichtung
摘要
申请公布号
DE503070(C)
申请公布日期
1930.07.31
申请号
DE1927B132050D
申请日期
1927.06.23
申请人
PAUL BARD
发明人
分类号
F24F7/00
主分类号
F24F7/00
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代理人
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