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发明名称
Provitamin a extraction process
摘要
申请公布号
US2318747(A)
申请公布日期
1943.05.11
申请号
US19390255219
申请日期
1939.02.08
申请人
NATIONAL OIL PRODUCTS COMPANY
发明人
BUXTON LORAN O.
分类号
A61K31/07;C11B3/00;C11B7/00
主分类号
A61K31/07
代理机构
代理人
主权项
地址
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