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发明名称
Rail re-layer
摘要
申请公布号
US2671414(A)
申请公布日期
1954.03.09
申请号
US19490106208
申请日期
1949.07.22
申请人
MOE EARL A
发明人
MOE EARL A.
分类号
E01B29/16
主分类号
E01B29/16
代理机构
代理人
主权项
地址
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