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经营范围
发明名称
Process of liberating pulp from raw cellulosic materials
摘要
申请公布号
US1864620(A)
申请公布日期
1932.06.28
申请号
US19310516844
申请日期
1931.02.18
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
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