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发明名称
Excavating apparatus
摘要
申请公布号
US1814863(A)
申请公布日期
1931.07.14
申请号
US19290392322
申请日期
1929.09.13
申请人
THE MARION STEAM SHOVEL COMPANY
发明人
SHELTON DWIGHT J.
分类号
E02F3/30
主分类号
E02F3/30
代理机构
代理人
主权项
地址
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