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发明名称
摘要
申请公布号
FR1586693(A)
申请公布日期
1970.02.27
申请号
FRD1586693
申请日期
1968.08.13
申请人
发明人
分类号
E04G1/14;E04G1/15;E04G7/20;E06C1/10
主分类号
E04G1/14
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