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发明名称
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摘要
申请公布号
US1768894(A)
申请公布日期
1930.07.01
申请号
US19290381429
申请日期
1929.07.27
申请人
WELLINGTON DUBERVILL
发明人
DUBERVILL WELLINGTON
分类号
A01D87/00
主分类号
A01D87/00
代理机构
代理人
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