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发明名称
摘要
申请公布号
FR2410091(B1)
申请公布日期
1983.11.10
申请号
FR19780020947
申请日期
1978.07.13
申请人
MINNESOTA MINING MANUFACTURING
发明人
分类号
E01F9/08;E01F9/04;G02B5/124;(IPC1-7):01F9/04;02B5/124
主分类号
E01F9/08
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