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发明名称
Bituminous materials and process of making same
摘要
申请公布号
US1937749(A)
申请公布日期
1933.12.05
申请号
US19300483126
申请日期
1930.09.19
申请人
COLPROVIA ROADS, INC.
发明人
EBBERTS ALFRED R.
分类号
C10C3/00
主分类号
C10C3/00
代理机构
代理人
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地址
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