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发明名称
Harrow teeth
摘要
申请公布号
US1751493(A)
申请公布日期
1930.03.25
申请号
US19280258499
申请日期
1928.03.02
申请人
PERKINS BERT B
发明人
PERKINS BERT B.
分类号
A01B23/02
主分类号
A01B23/02
代理机构
代理人
主权项
地址
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