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发明名称
Roadway signal device retriever
摘要
申请公布号
US3268052(A)
申请公布日期
1966.08.23
申请号
US19640393659
申请日期
1964.09.01
申请人
ASBURY EDWARD M
发明人
ASBURY EDWARD M.
分类号
E01F9/014
主分类号
E01F9/014
代理机构
代理人
主权项
地址
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