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发明名称
Paving material and process of making same
摘要
申请公布号
US1961678(A)
申请公布日期
1934.06.05
申请号
US19320597430
申请日期
1932.03.07
申请人
SWEENEY BROS.
发明人
SWEENEY JAMES T.
分类号
E01C7/18
主分类号
E01C7/18
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