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发明名称
Trenching machine
摘要
申请公布号
US2990631(A)
申请公布日期
1961.07.04
申请号
US19570665171
申请日期
1957.06.12
申请人
DELBERT BROWN WILLIAM
发明人
BROWN WILLIAM DELBERT
分类号
E02F3/08;E02F3/10;E02F5/06
主分类号
E02F3/08
代理机构
代理人
主权项
地址
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