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发明名称
Method of producing multicolored relief pictures
摘要
申请公布号
US2244905(A)
申请公布日期
1941.06.10
申请号
US19380226469
申请日期
1938.08.24
申请人
JACK CRAWFORD
发明人
CRAWFORD JACK
分类号
G03C11/18
主分类号
G03C11/18
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代理人
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