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发明名称
Ventilating device for roofs
摘要
申请公布号
CH632040(A5)
申请公布日期
1982.09.15
申请号
CH19770016330
申请日期
1977.12.30
申请人
FLECK, OSKAR
发明人
OSKAR FLECK
分类号
E04D1/30;(IPC1-7):E04D13/16
主分类号
E04D1/30
代理机构
代理人
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