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经营范围
发明名称
Earth mover
摘要
申请公布号
US2323428(A)
申请公布日期
1943.07.06
申请号
US19390263446
申请日期
1939.03.22
申请人
SPENCER JR ALLAN T
发明人
JR. ALLAN T. SPENCER,
分类号
E02F3/64
主分类号
E02F3/64
代理机构
代理人
主权项
地址
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