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发明名称
Highway guard rail
摘要
申请公布号
US2265698(A)
申请公布日期
1941.12.09
申请号
US19390262467
申请日期
1939.03.17
申请人
OPGENORTH JOHN E
发明人
OPGENORTH JOHN E.
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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