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经营范围
发明名称
Attrition mill
摘要
申请公布号
US1847967(A)
申请公布日期
1932.03.01
申请号
US19280310825
申请日期
1928.10.06
申请人
THE WOLF COMPANY
发明人
KEEFER WALTER L.
分类号
B02C7/06
主分类号
B02C7/06
代理机构
代理人
主权项
地址
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