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发明名称
WEED FREE ENVIRONMENT FOR GROWING SEEDS
摘要
申请公布号
GB8917985(D0)
申请公布日期
1989.09.20
申请号
GB19890017985
申请日期
1989.08.07
申请人
KNOWLES, ALBERT H
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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