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发明名称
Harrow
摘要
申请公布号
US2970656(A)
申请公布日期
1961.02.07
申请号
US19580721859
申请日期
1958.03.17
申请人
FORD MOTOR COMPANY
发明人
KAMPE DWIGHT F.
分类号
A01B21/08;E21B23/06
主分类号
A01B21/08
代理机构
代理人
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