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发明名称
Procédé et machine pour fabriquer des matériaux creux fermés de tous les côtés ou ouverts totalement ou partiellement sur un ou plusieurs côtés
摘要
申请公布号
FR724653(A)
申请公布日期
1932.04.30
申请号
FRD724653
申请日期
1931.07.11
申请人
发明人
LUKAS HANS
分类号
B28B3/20
主分类号
B28B3/20
代理机构
代理人
主权项
地址
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