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发明名称
Apparatus for refining of raw materials
摘要
申请公布号
US1971335(A)
申请公布日期
1934.08.28
申请号
US19320645178
申请日期
1932.12.01
申请人
THE CARBORUNDUM COMPANY
发明人
BENNER RAYMOND C.;BALL ALBERT L.
分类号
B02C2/10
主分类号
B02C2/10
代理机构
代理人
主权项
地址
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