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发明名称
摘要
申请公布号
NL7006966(A)
申请公布日期
1971.11.16
申请号
NL19700006966
申请日期
1970.05.14
申请人
发明人
分类号
E02F3/88;(IPC1-7):02F3/88
主分类号
E02F3/88
代理机构
代理人
主权项
地址
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