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发明名称
Procédé et dispositif pour l'obtention de cavités dans des objets obtenus par moulage ou modelage
摘要
申请公布号
FR1017175(A)
申请公布日期
1952.12.03
申请号
FRD1017175
申请日期
1950.05.06
申请人
发明人
BOUYGUES FRANCIS-GEORGES-RENE
分类号
E04C5/12
主分类号
E04C5/12
代理机构
代理人
主权项
地址
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