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发明名称
Metal cleaning
摘要
申请公布号
US2070487(A)
申请公布日期
1937.02.09
申请号
US19340758937
申请日期
1934.12.24
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
LUTZ GEORGE
分类号
C23C22/08
主分类号
C23C22/08
代理机构
代理人
主权项
地址
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