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经营范围
发明名称
Refiner for pulp and like materials
摘要
申请公布号
US1963970(A)
申请公布日期
1934.06.26
申请号
US19310556662
申请日期
1931.08.12
申请人
CANNARD WILLIAM H
发明人
CANNARD WILLIAM H.
分类号
B02C15/08
主分类号
B02C15/08
代理机构
代理人
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