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发明名称
Asphalts and method for producing same
摘要
申请公布号
US2029290(A)
申请公布日期
1936.02.04
申请号
US19340758072
申请日期
1934.12.18
申请人
UNION OIL COMPANY OF CALIFORNIA
发明人
BRAY ULRIC B.;BECKWITH LAWTON B.
分类号
C10C3/04
主分类号
C10C3/04
代理机构
代理人
主权项
地址
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