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发明名称
Harrow
摘要
申请公布号
US2158746(A)
申请公布日期
1939.05.16
申请号
US19380204874
申请日期
1938.04.28
申请人
JOSEPH DINWIDDIE
发明人
DINWIDDIE JOSEPH
分类号
A01B21/08
主分类号
A01B21/08
代理机构
代理人
主权项
地址
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