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发明名称
摘要
申请公布号
FR2429882(B1)
申请公布日期
1982.08.20
申请号
FR19780019312
申请日期
1978.06.28
申请人
BOUYGUES
发明人
分类号
E04G21/32;(IPC1-7):E04F11/18
主分类号
E04G21/32
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代理人
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