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经营范围
发明名称
Fastening for securing railway rails to metal sleepers
摘要
申请公布号
US2568376(A)
申请公布日期
1951.09.18
申请号
US19480010015
申请日期
1948.02.21
申请人
EXECUTORS OF JAMES MILLS, LIMITED
发明人
WRAGGE WILLIAM B.
分类号
E01B9/32
主分类号
E01B9/32
代理机构
代理人
主权项
地址
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