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发明名称
Couverture métallique perfectionnée
摘要
申请公布号
FR914927(A)
申请公布日期
1946.10.22
申请号
FRD914927
申请日期
1945.04.24
申请人
发明人
CREY MARCEL
分类号
E04D3/30;E04D13/064
主分类号
E04D3/30
代理机构
代理人
主权项
地址
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