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经营范围
发明名称
Railroad rail bracing
摘要
申请公布号
US2052041(A)
申请公布日期
1936.08.25
申请号
US19350036162
申请日期
1935.08.14
申请人
JOHN SUTINEN
发明人
SUTINEN JOHN
分类号
E01B9/60
主分类号
E01B9/60
代理机构
代理人
主权项
地址
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