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经营范围
发明名称
Asphalt and method for producing same
摘要
申请公布号
US2314124(A)
申请公布日期
1943.03.16
申请号
US19390279490
申请日期
1939.06.16
申请人
UNION OIL COMPANY OF CALIFORNIA
发明人
CARR DONALD E.;RITCHEY HAROLD W.
分类号
C08L95/00
主分类号
C08L95/00
代理机构
代理人
主权项
地址
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