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发明名称
Highway guard
摘要
申请公布号
US2238683(A)
申请公布日期
1941.04.15
申请号
US19400316098
申请日期
1940.01.29
申请人
LOUIS S. WERTZ, INC.
发明人
ELLIOTT HARVEY F.
分类号
E01F9/012
主分类号
E01F9/012
代理机构
代理人
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