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发明名称
Process and apparatus for photoelectric engraving
摘要
申请公布号
US2638500(A)
申请公布日期
1953.05.12
申请号
US19510234006
申请日期
1951.06.28
申请人
ERNST CLARE E
发明人
ERNST CLARE E.
分类号
B41C1/04
主分类号
B41C1/04
代理机构
代理人
主权项
地址
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