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发明名称
摘要
申请公布号
FR2249213(B3)
申请公布日期
1977.01.07
申请号
FR19740035804
申请日期
1974.10.25
申请人
LE CLERCQ PIERRE
发明人
分类号
E02D5/30;E02D5/38;E02D5/66;E04C3/34;(IPC1-7):E02D5/22
主分类号
E02D5/30
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