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发明名称
Tie plate
摘要
申请公布号
US1821807(A)
申请公布日期
1931.09.01
申请号
US19300472367
申请日期
1930.08.01
申请人
FRED HUFF
发明人
HUFF FRED
分类号
E01B13/02
主分类号
E01B13/02
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代理人
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