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发明名称
摘要
申请公布号
NL7105004(A)
申请公布日期
1972.10.17
申请号
NL19710005004
申请日期
1971.04.15
申请人
发明人
分类号
A01C3/06
主分类号
A01C3/06
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代理人
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