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发明名称
Perfectionnements aux éléments de construction
摘要
申请公布号
FR913836(A)
申请公布日期
1946.09.20
申请号
FRD913836
申请日期
1945.08.30
申请人
NATIONAL STEEL CORPORATION
发明人
分类号
E04C3/04;E04C3/07
主分类号
E04C3/04
代理机构
代理人
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地址
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