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经营范围
发明名称
An improved railway rail anchor
摘要
申请公布号
GB471728(A)
申请公布日期
1937.09.09
申请号
GB19370013880
申请日期
1937.05.18
申请人
POOR & COMPANY
发明人
分类号
E01B13/02
主分类号
E01B13/02
代理机构
代理人
主权项
地址
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