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发明名称
Способ изготовления без засвечивания контактных копий
摘要
申请公布号
SU113551(A1)
申请公布日期
1957.11.30
申请号
SU19540455897
申请日期
1954.04.22
申请人
FRITS ULMAN
发明人
FRITS ULMAN
分类号
G03C5/50;G03C11/22
主分类号
G03C5/50
代理机构
代理人
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地址
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