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经营范围
发明名称
Excavating apparatus
摘要
申请公布号
US2303001(A)
申请公布日期
1942.11.24
申请号
US19400342034
申请日期
1940.06.24
申请人
MARION P. MCCAFFREY
发明人
RUDDOCK WILLIAM
分类号
E02F3/42
主分类号
E02F3/42
代理机构
代理人
主权项
地址
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