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经营范围
发明名称
Excavating apparatus
摘要
申请公布号
US1852258(A)
申请公布日期
1932.04.05
申请号
US19290362742
申请日期
1929.05.13
申请人
NORTHWEST ENGINEERING CORPORATION
发明人
ORLOFF ARTHUR
分类号
E02F3/30;E02F3/32;E02F3/42
主分类号
E02F3/30
代理机构
代理人
主权项
地址
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