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经营范围
发明名称
Improved method for preparing substances having vitamin a activity
摘要
申请公布号
GB560077(A)
申请公布日期
1944.03.20
申请号
GB19410006067
申请日期
1941.05.10
申请人
DISTILLATION PRODUCTS INC.
发明人
分类号
A61K31/59
主分类号
A61K31/59
代理机构
代理人
主权项
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