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经营范围
发明名称
Rail anchor
摘要
申请公布号
US1812414(A)
申请公布日期
1931.06.30
申请号
US19300432419
申请日期
1930.03.01
申请人
THE P & M COMPANY
发明人
SHEPHERD CHARLES B.
分类号
E01B13/02
主分类号
E01B13/02
代理机构
代理人
主权项
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