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发明名称
Means for automatically copying pictures and making printing plates for printing pictures, etc.
摘要
申请公布号
US1782717(A)
申请公布日期
1930.11.25
申请号
US19280303765
申请日期
1928.09.04
申请人
HEINRICH DREWELL
发明人
DREWELL HEINRICH
分类号
G03F1/00
主分类号
G03F1/00
代理机构
代理人
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