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发明名称
AUTOMATIC DEPTH CONTROL FOR AN IMPLEMENT
摘要
申请公布号
CA629271(A)
申请公布日期
1961.10.17
申请号
CAD629271
申请日期
申请人
ALLIS-CHALMERS MANUFACTURING COMPANY
发明人
HARVEY W. ROCKWELL
分类号
主分类号
代理机构
代理人
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