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发明名称
Insekten- und staubsichere Lueftungsvorrichtung an Fenstern
摘要
申请公布号
DE539023(C)
申请公布日期
1931.11.20
申请号
DENDATH124270D
申请日期
申请人
JUSTUS HAARMANN
发明人
分类号
E06B9/52
主分类号
E06B9/52
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代理人
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