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发明名称
Firstentlüfter
摘要
申请公布号
AT254466(B)
申请公布日期
1967.05.26
申请号
AT19650000144
申请日期
1965.01.11
申请人
ETERNIT-WERKE LUDWIG HATSCHEK
发明人
分类号
E04D3/40;E04D13/16;E04D13/17;E05B63/04
主分类号
E04D3/40
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代理人
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