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发明名称
Контрастный способ изготовления светосильных растров
摘要
申请公布号
SU84103(A1)
申请公布日期
1949.11.30
申请号
SU19480380745
申请日期
1948.04.06
申请人
IVANOV S.P.
发明人
IVANOV S.P.
分类号
G03F5/00
主分类号
G03F5/00
代理机构
代理人
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地址
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