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发明名称
Highway guard
摘要
申请公布号
US1776517(A)
申请公布日期
1930.09.23
申请号
US19290340897
申请日期
1929.02.18
申请人
THE COLORADO FUEL & IRON COMPANY
发明人
MACDONALD CHARLES HARVEY
分类号
E01F15/06
主分类号
E01F15/06
代理机构
代理人
主权项
地址
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