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发明名称
摘要
申请公布号
FR2129993(A2)
申请公布日期
1972.11.03
申请号
FR19710010579
申请日期
1971.03.25
申请人
CALLEGARI CHRISTIAN
发明人
分类号
E04B2/74;E04B2/82;(IPC1-7):E04B2/00
主分类号
E04B2/74
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