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经营范围
发明名称
Ridge forming and leveling disc plow
摘要
申请公布号
US2431959(A)
申请公布日期
1947.12.02
申请号
US19450587676
申请日期
1945.04.11
申请人
RAY OLSON;ARCHIE OLSON
发明人
OLSON RAY;OLSON ARCHIE
分类号
A01B21/08
主分类号
A01B21/08
代理机构
代理人
主权项
地址
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