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发明名称
Hohlstein zur Herstellung von Mauern und Decken, aus solchen Hohlsteinen hergestellte Mauer und Decke sowie aus solchen bestehendes Bauwerk
摘要
申请公布号
AT171251(B)
申请公布日期
1952.05.10
申请号
ATD171251
申请日期
1949.12.12
申请人
ERWIN HAGN
发明人
ERWIN HAGN
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主分类号
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代理人
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