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发明名称
Voûte perfectionnée
摘要
申请公布号
FR857960(A)
申请公布日期
1940.11.13
申请号
FRD857960
申请日期
1939.07.18
申请人
发明人
BESCHKINE LEON
分类号
E04B7/00
主分类号
E04B7/00
代理机构
代理人
主权项
地址
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