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发明名称
Purification of cellulose esters
摘要
申请公布号
US1798270(A)
申请公布日期
1931.03.31
申请号
US19290343832
申请日期
1929.03.01
申请人
FREDRICH OLSEN
发明人
OLSEN FREDRICH
分类号
D01F2/28
主分类号
D01F2/28
代理机构
代理人
主权项
地址
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