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发明名称
摘要
申请公布号
AU2634667(A)
申请公布日期
1970.02.12
申请号
AU19670026346
申请日期
1968.08.07
申请人
发明人
分类号
E02F3/20;E02F5/02;E02F5/14;E21B7/00
主分类号
E02F3/20
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代理人
主权项
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