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发明名称
Highway guard
摘要
申请公布号
US2646969(A)
申请公布日期
1953.07.28
申请号
US19500137457
申请日期
1950.01.07
申请人
UNITED STATES SPRING & BUMPER CO., INC.
发明人
HENDRICKSON NIELS E.
分类号
E01F15/04
主分类号
E01F15/04
代理机构
代理人
主权项
地址
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