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发明名称
Hay fork
摘要
申请公布号
US1861085(A)
申请公布日期
1932.05.31
申请号
US19310508647
申请日期
1931.01.14
申请人
GRABER JOHN N
发明人
GRABER JOHN N.
分类号
A01D87/00
主分类号
A01D87/00
代理机构
代理人
主权项
地址
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