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发明名称
摘要
申请公布号
FR2100386(A5)
申请公布日期
1972.03.17
申请号
FR19710024923
申请日期
1971.07.07
申请人
ROOSA VERNON
发明人
分类号
E03D1/08;(IPC1-7):E03D1/00
主分类号
E03D1/08
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