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经营范围
发明名称
Spring for fastening a rail to a sleeper
摘要
申请公布号
USD285046(S1)
申请公布日期
1986.08.12
申请号
US06/555370
申请日期
1983.11.28
申请人
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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