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经营范围
发明名称
Rail joint
摘要
申请公布号
US2759676(A)
申请公布日期
1956.08.21
申请号
US19530355758
申请日期
1953.05.18
申请人
WILBERT MACDONALD JAMES
发明人
MACDONALD JAMES WILBERT
分类号
E01B11/32
主分类号
E01B11/32
代理机构
代理人
主权项
地址
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