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经营范围
发明名称
Pole or pile pulling device
摘要
申请公布号
US2160892(A)
申请公布日期
1939.06.06
申请号
US19380195888
申请日期
1938.03.14
申请人
NEFF SAMUEL G
发明人
NEFF SAMUEL G.
分类号
E02D9/02
主分类号
E02D9/02
代理机构
代理人
主权项
地址
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