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发明名称
Method of etching plates
摘要
申请公布号
US2074221(A)
申请公布日期
1937.03.16
申请号
US19350039711
申请日期
1935.09.09
申请人
HOLLAND LOUIS E
发明人
HOLLAND LOUIS E.
分类号
C25F3/02;C25F7/00
主分类号
C25F3/02
代理机构
代理人
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地址
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