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发明名称
Road construction
摘要
申请公布号
US2746365(A)
申请公布日期
1956.05.22
申请号
US19510256654
申请日期
1951.11.16
申请人
DARNEILLE JOSEPH A
发明人
DARNEILLE JOSEPH A.
分类号
E01C7/14
主分类号
E01C7/14
代理机构
代理人
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