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经营范围
发明名称
Material working machines
摘要
申请公布号
US3076391(A)
申请公布日期
1963.02.05
申请号
US19570640456
申请日期
1957.02.15
申请人
CALFEE VIRGIL T
发明人
CALFEE VIRGIL T.
分类号
E02D3/046
主分类号
E02D3/046
代理机构
代理人
主权项
地址
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