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发明名称
Boundary marker
摘要
申请公布号
US3279133(A)
申请公布日期
1966.10.18
申请号
US19640390426
申请日期
1964.08.18
申请人
DE KORTE JOHN F
发明人
KORTE JOHN F. DE
分类号
E01F9/017
主分类号
E01F9/017
代理机构
代理人
主权项
地址
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