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发明名称
Dropout half-tone negative
摘要
申请公布号
US2315101(A)
申请公布日期
1943.03.30
申请号
US19410404572
申请日期
1941.07.29
申请人
LASZLO ZUKMANN
发明人
ZUKMANN LASZLO
分类号
G03F5/24
主分类号
G03F5/24
代理机构
代理人
主权项
地址
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