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发明名称
Method and means for variation of magnetic strength of permanent magnetic drums
摘要
申请公布号
US2992737(A)
申请公布日期
1961.07.18
申请号
US19590786873
申请日期
1959.01.14
申请人
INDIANA GENERAL CORPORATION
发明人
BUUS HAROLD W.
分类号
B03C1/14
主分类号
B03C1/14
代理机构
代理人
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地址
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