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发明名称
Rail tool
摘要
申请公布号
US2449232(A)
申请公布日期
1948.09.14
申请号
US19460683631
申请日期
1946.07.15
申请人
JONES E D
发明人
JONES E. D.
分类号
E01B29/20
主分类号
E01B29/20
代理机构
代理人
主权项
地址
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