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发明名称
Furrow dammer
摘要
申请公布号
US2155891(A)
申请公布日期
1939.04.25
申请号
US19370169879
申请日期
1937.10.19
申请人
CAMPBELL THOMAS D
发明人
CAMPBELL THOMAS D.
分类号
A01B13/16
主分类号
A01B13/16
代理机构
代理人
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地址
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