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发明名称
Railway-rail anchor
摘要
申请公布号
US1780714(A)
申请公布日期
1930.11.04
申请号
US19300441285
申请日期
1930.04.03
申请人
THEODORE F. VON DORN
发明人
NORWOOD HARRY G.
分类号
E01B13/02
主分类号
E01B13/02
代理机构
代理人
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地址
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