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经营范围
发明名称
Trenching machine
摘要
申请公布号
US2847771(A)
申请公布日期
1958.08.19
申请号
US19540426688
申请日期
1954.04.30
申请人
COLSON ELMER E
发明人
COLSON ELMER E.
分类号
E02F3/18;E02F3/20;E02F5/02;E02F5/08
主分类号
E02F3/18
代理机构
代理人
主权项
地址
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