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发明名称
Excavating device
摘要
申请公布号
US1747130(A)
申请公布日期
1930.02.11
申请号
US19270171289
申请日期
1927.02.26
申请人
PAGE JOHN W
发明人
PAGE JOHN W.
分类号
E02F3/60
主分类号
E02F3/60
代理机构
代理人
主权项
地址
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