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发明名称
Road marker
摘要
申请公布号
US2185488(A)
申请公布日期
1940.01.02
申请号
US19380240031
申请日期
1938.11.12
申请人
THE COLONIAL INSULATOR COMPANY
发明人
JR. CHARLES M. WHITE,
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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