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经营范围
发明名称
Excavating apparatus
摘要
申请公布号
US2909855(A)
申请公布日期
1959.10.27
申请号
US19560599804
申请日期
1956.07.24
申请人
THE UNITED ELECTRIC COAL COMPANIES
发明人
KOLBE FRANK F.
分类号
E02F3/18;E02F3/24
主分类号
E02F3/18
代理机构
代理人
主权项
地址
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