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经营范围
发明名称
Improvements in or relating to metal keys for securing railway rails in their supporting chairs
摘要
申请公布号
GB482574(A)
申请公布日期
1938.03.28
申请号
GB19360017754
申请日期
1936.06.26
申请人
EXECUTORS OF JAMES MILLS, LIMITED;ALLAN MACBETH
发明人
分类号
E01B9/58
主分类号
E01B9/58
代理机构
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