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发明名称
PORTABLE ROAD SIGN UNIT
摘要
申请公布号
US3557479(A)
申请公布日期
1971.01.26
申请号
USD3557479
申请日期
1968.08.07
申请人
EASTERN METAL OF ELMIRA INC.
发明人
GEORGE F. ALLISON;DEWEY L. MOSS;HERMAN L. PENDLETON
分类号
E01F9/012;(IPC1-7):G09F1/00
主分类号
E01F9/012
代理机构
代理人
主权项
地址
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