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发明名称
Tuile, carreau ou élément métallique flexible de doublage ou de revêtement
摘要
申请公布号
FR831460(A)
申请公布日期
1938.09.05
申请号
FRD831460
申请日期
1937.12.30
申请人
LUDLUM STEEL CO
发明人
分类号
E04C2/292
主分类号
E04C2/292
代理机构
代理人
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