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经营范围
发明名称
Portable traffic marker
摘要
申请公布号
US2898879(A)
申请公布日期
1959.08.11
申请号
US19570648832
申请日期
1957.03.27
申请人
I.D.L. INC.
发明人
SR. HUGH A. MURRAY,
分类号
E01F9/012
主分类号
E01F9/012
代理机构
代理人
主权项
地址
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