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发明名称
Rail retaining and spike fastening means
摘要
申请公布号
US2457592(A)
申请公布日期
1948.12.28
申请号
US19440532071
申请日期
1944.04.21
申请人
MULLER GEORGE W
发明人
MULLER GEORGE W.
分类号
E01B9/12
主分类号
E01B9/12
代理机构
代理人
主权项
地址
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