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经营范围
发明名称
Manufacture of bituminous pavements and paving compositions
摘要
申请公布号
US2349446(A)
申请公布日期
1944.05.23
申请号
US19400334163
申请日期
1940.05.09
申请人
COLPROVIA ROADS, INC.
发明人
MCGRANE FRANK B.
分类号
E01C7/18
主分类号
E01C7/18
代理机构
代理人
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地址
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