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发明名称
Production of paper pulp
摘要
申请公布号
US1780638(A)
申请公布日期
1930.11.04
申请号
US19290416014
申请日期
1929.12.23
申请人
WOLF ROBERT B
发明人
WOLF ROBERT B.
分类号
D21C11/06
主分类号
D21C11/06
代理机构
代理人
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