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发明名称
Color printing
摘要
申请公布号
US1839956(A)
申请公布日期
1932.01.05
申请号
US19280301948
申请日期
1928.08.24
申请人
LOUIS DUFAY
发明人
DUFAY LOUIS
分类号
G03C7/06
主分类号
G03C7/06
代理机构
代理人
主权项
地址
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