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发明名称
Sympathetic ink
摘要
申请公布号
US2228033(A)
申请公布日期
1941.01.07
申请号
US19380183724
申请日期
1938.01.06
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
MARTONE THOMAS A.
分类号
C09D11/00;D06P1/50;D21H21/46
主分类号
C09D11/00
代理机构
代理人
主权项
地址
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