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发明名称
Perfectionnements au cintrage des ponts
摘要
申请公布号
FR1164374(A)
申请公布日期
1958.10.08
申请号
FRD1164374
申请日期
1957.01.04
申请人
发明人
PIERRE BERNARD-ANDRE
分类号
E01D21/00;E04C3/44
主分类号
E01D21/00
代理机构
代理人
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