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发明名称
Margining device for use in positive printing
摘要
申请公布号
US2549544(A)
申请公布日期
1951.04.17
申请号
US19470732517
申请日期
1947.03.05
申请人
JULIEN TESSLER
发明人
TESSLER JULIEN
分类号
G03B27/58
主分类号
G03B27/58
代理机构
代理人
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地址
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