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发明名称
Perfectionnements aux éléments de construction à abouter et à nervurer
摘要
申请公布号
FR747856(A)
申请公布日期
1933.06.24
申请号
FRD747856
申请日期
1932.12.20
申请人
发明人
DELOUPY GUY
分类号
E04C3/22
主分类号
E04C3/22
代理机构
代理人
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