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发明名称
Asphalt preparation
摘要
申请公布号
US2223776(A)
申请公布日期
1940.12.03
申请号
US19380236218
申请日期
1938.10.21
申请人
SHELL DEVELOPMENT COMPANY
发明人
ANDERSON ALVIN PIERCE
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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