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发明名称
Traffic marker
摘要
申请公布号
US2699982(A)
申请公布日期
1955.01.18
申请号
US19510211751
申请日期
1951.02.19
申请人
THOMAS C. BATTERSON
发明人
BATTERSON GLADYS C.
分类号
E01F9/06
主分类号
E01F9/06
代理机构
代理人
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