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发明名称
Digester system
摘要
申请公布号
US1831206(A)
申请公布日期
1931.11.10
申请号
US19310520625
申请日期
1931.03.06
申请人
PAPER PATENTS COMPANY
发明人
SWANSON WALTER H.;LANG LLOYD
分类号
D21C7/14
主分类号
D21C7/14
代理机构
代理人
主权项
地址
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