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发明名称
Harrow
摘要
申请公布号
US2177570(A)
申请公布日期
1939.10.24
申请号
US19390260871
申请日期
1939.03.09
申请人
NORTHERN WISCONSIN MANUFACTURING CO.
发明人
JULIOT JOSEPH
分类号
A01B19/02
主分类号
A01B19/02
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代理人
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