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摘要
申请公布号
US1949666(A)
申请公布日期
1934.03.06
申请号
US19340705199
申请日期
1934.01.04
申请人
SINCLAIR REFINING COMPANY
发明人
SHOEMAKER WILLIAM E.
分类号
G09F3/20
主分类号
G09F3/20
代理机构
代理人
主权项
地址
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