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经营范围
发明名称
Reduction apparatus
摘要
申请公布号
US2981489(A)
申请公布日期
1961.04.25
申请号
US19600008643
申请日期
1960.02.15
申请人
HANNUM JR WILLIAM B
发明人
JR. WILLIAM B. HANNUM,
分类号
B02C13/18
主分类号
B02C13/18
代理机构
代理人
主权项
地址
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