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发明名称
Procédé de construction d'éléments creux en ciment, béton ou béton armé
摘要
申请公布号
FR725191(A)
申请公布日期
1932.05.09
申请号
FRD725191
申请日期
1931.10.06
申请人
发明人
ESTCHENKO VALENTIN
分类号
B28B21/88
主分类号
B28B21/88
代理机构
代理人
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