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发明名称
摘要
申请公布号
FR2344677(B3)
申请公布日期
1978.12.08
申请号
FR19760007617
申请日期
1976.03.15
申请人
SANDT JEAN
发明人
分类号
E02B3/12;(IPC1-7):E02B3/12
主分类号
E02B3/12
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