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经营范围
发明名称
Perfectionnements à la construction des planchers
摘要
申请公布号
FR850028(A)
申请公布日期
1939.12.06
申请号
FRD850028
申请日期
1939.02.08
申请人
发明人
DESAGNAT GASTON
分类号
E04F15/18
主分类号
E04F15/18
代理机构
代理人
主权项
地址
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