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发明名称
Road guard
摘要
申请公布号
US2074771(A)
申请公布日期
1937.03.23
申请号
US19360065166
申请日期
1936.02.21
申请人
THE AMERICAN STEEL AND WIRE COMPANY
发明人
BRICKMAN ALAN E.;GLEASON GEORGE A.
分类号
E01F15/06
主分类号
E01F15/06
代理机构
代理人
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地址
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