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发明名称
Ventilgruppe für Unterputz-Einbau
摘要
申请公布号
CH331775(A)
申请公布日期
1958.08.15
申请号
CHD331775
申请日期
1955.05.27
申请人
J. & R. GUNZENHAUSER AG.
发明人
分类号
F24H9/12
主分类号
F24H9/12
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代理人
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