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发明名称
Methods of separating or classifying materials
摘要
申请公布号
US2874840(A)
申请公布日期
1959.02.24
申请号
US19550536181
申请日期
1955.09.23
申请人
COLUMBIAN-GENERAL BLACKS LIMITED
发明人
SIMPSON ROBERT MICHAEL
分类号
B07B1/00
主分类号
B07B1/00
代理机构
代理人
主权项
地址
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