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发明名称
摘要
申请公布号
FR2438719(B1)
申请公布日期
1981.03.06
申请号
FR19780029464
申请日期
1978.10.10
申请人
KLEIN BERNARD
发明人
分类号
E04B1/21;E04C3/44;(IPC1-7):E04C3/44
主分类号
E04B1/21
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