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摘要
申请公布号
US1928337(A)
申请公布日期
1933.09.26
申请号
US19320625962
申请日期
1932.07.29
申请人
STANDARD OIL COMPANY
发明人
MCCLANAHAN ELLIS J.
分类号
B42F7/00
主分类号
B42F7/00
代理机构
代理人
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