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经营范围
发明名称
EARTHWORKING APPARATUS
摘要
申请公布号
GB1485516(A)
申请公布日期
1977.09.14
申请号
GB19740053438
申请日期
1974.12.10
申请人
CATERPILLAR TRACTOR CO
发明人
分类号
E02F3/815;E02F9/28;(IPC1-7):E02F9/28
主分类号
E02F3/815
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代理人
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