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发明名称
Roadway structures
摘要
申请公布号
US3211110(A)
申请公布日期
1965.10.12
申请号
US19620207691
申请日期
1962.07.05
申请人
PIERSON ROBERT M
发明人
PIERSON ROBERT M.
分类号
E01B25/28;E01D11/00
主分类号
E01B25/28
代理机构
代理人
主权项
地址
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