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经营范围
发明名称
Production of refined wood pulp
摘要
申请公布号
US1831032(A)
申请公布日期
1931.11.10
申请号
US19290410887
申请日期
1929.11.30
申请人
BROWN COMPANY
发明人
RICHTER GEORGE A.
分类号
D21C1/02
主分类号
D21C1/02
代理机构
代理人
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