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发明名称
摘要
申请公布号
BG17356(A1)
申请公布日期
1973.11.10
申请号
BG19710019060
申请日期
1971.11.19
申请人
发明人
分类号
A01B17/00;(IPC1-7):A01B17/00
主分类号
A01B17/00
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代理人
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