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发明名称
Rake cleaning device
摘要
申请公布号
US3012392(A)
申请公布日期
1961.12.12
申请号
US19590840497
申请日期
1959.09.14
申请人
WALTERS JOHN F;WALTERS FREDERICK A
发明人
WALTERS JOHN F.;WALTERS FREDERICK A.
分类号
A01D7/10
主分类号
A01D7/10
代理机构
代理人
主权项
地址
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