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经营范围
发明名称
Treatment of materials made of or containing cellulose derivatives
摘要
申请公布号
US1855131(A)
申请公布日期
1932.04.19
申请号
US19300419457
申请日期
1930.01.08
申请人
HENRY DREYFUS
发明人
DREYFUS HENRY
分类号
C09B69/00;D06P3/34
主分类号
C09B69/00
代理机构
代理人
主权项
地址
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