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经营范围
发明名称
Apparatus for bleaching pulp
摘要
申请公布号
US1924860(A)
申请公布日期
1933.08.29
申请号
US19310582566
申请日期
1931.12.22
申请人
PAPER PATENTS COMPANY
发明人
JOHN HANS;FEBVRE CLARENCE C. LE;BOIS HORACE DU
分类号
D21C9/10
主分类号
D21C9/10
代理机构
代理人
主权项
地址
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