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发明名称
Ditchdigging attachment for tractors
摘要
申请公布号
US2496874(A)
申请公布日期
1950.02.07
申请号
US19470756850
申请日期
1947.06.25
申请人
WAIN-ROY CORPORATION
发明人
HOLOPAINEN VAINO J.
分类号
E02F5/02
主分类号
E02F5/02
代理机构
代理人
主权项
地址
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