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摘要
申请公布号
GB1229392(A)
申请公布日期
1971.04.21
申请号
GBD1229392
申请日期
1969.01.13
申请人
发明人
分类号
A01B49/02;A01B49/06;A01B59/042;A01B63/00
主分类号
A01B49/02
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