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经营范围
发明名称
élément en béton-armé vibré préfabriqué en forme de double t à évidements dans l'âme et dans les ailes permettant la construction rapide de locaux d'habitation
摘要
申请公布号
FR926320(A)
申请公布日期
1947.09.29
申请号
FRD926320
申请日期
1946.05.06
申请人
发明人
RUOTA ATTILIUS
分类号
E04C3/20;E04C3/34
主分类号
E04C3/20
代理机构
代理人
主权项
地址
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