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经营范围
发明名称
Multiple-step process of fiber liberation
摘要
申请公布号
US1841551(A)
申请公布日期
1932.01.19
申请号
US19300450314
申请日期
1930.05.06
申请人
BROWN COMPANY
发明人
RICHTER GEORGE A.
分类号
D21C3/26
主分类号
D21C3/26
代理机构
代理人
主权项
地址
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