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发明名称
Elastic spikes for securing railroad tracks
摘要
申请公布号
US2780416(A)
申请公布日期
1957.02.05
申请号
US19530357773
申请日期
1953.05.27
申请人
HANS HODEL
发明人
HODEL HANS
分类号
E01B9/08
主分类号
E01B9/08
代理机构
代理人
主权项
地址
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