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发明名称
Traffic marker
摘要
申请公布号
US2321476(A)
申请公布日期
1943.06.08
申请号
US19400318088
申请日期
1940.02.09
申请人
SAF-T-DOT MARKER CORPORATION
发明人
FOSTER ROBERT;SHAFER JOHN F.
分类号
E01F9/06
主分类号
E01F9/06
代理机构
代理人
主权项
地址
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