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发明名称
Perfectionnement apporté aux matériaux de construction artificiels creux, notamment aux agglomérés de béton
摘要
申请公布号
FR914224(A)
申请公布日期
1946.10.02
申请号
FRD914224
申请日期
1945.04.04
申请人
发明人
PLEVEN PROSPER
分类号
E04B2/02;E04B2/14
主分类号
E04B2/02
代理机构
代理人
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