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发明名称
Road working apparatus
摘要
申请公布号
US2687071(A)
申请公布日期
1954.08.24
申请号
US19520283958
申请日期
1952.04.23
申请人
DAY WILLIAM P
发明人
DAY WILLIAM P.
分类号
E01C19/38
主分类号
E01C19/38
代理机构
代理人
主权项
地址
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