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发明名称
Harrow
摘要
申请公布号
US1924517(A)
申请公布日期
1933.08.29
申请号
US19320606698
申请日期
1932.04.21
申请人
GEORGE I. DANKS
发明人
RUFFNER EDWARD W.
分类号
A01B19/02
主分类号
A01B19/02
代理机构
代理人
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