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发明名称
Process for cleaning metal objects
摘要
申请公布号
US1898809(A)
申请公布日期
1933.02.21
申请号
US19290392897
申请日期
1929.09.16
申请人
NATIONAL RAIL JOINT CORPORATION
发明人
BERG ROBERT B.
分类号
C23G3/00
主分类号
C23G3/00
代理机构
代理人
主权项
地址
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