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发明名称
Process of manufacturing paper pulp
摘要
申请公布号
US1812575(A)
申请公布日期
1931.06.30
申请号
US19290341277
申请日期
1929.02.19
申请人
WAGNON HAMILTON D
发明人
WAGNON HAMILTON D.
分类号
D21C3/20
主分类号
D21C3/20
代理机构
代理人
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地址
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