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发明名称
COLORLESS PRINTING FLUID WITH TWO COLOR REACTANTS
摘要
申请公布号
CA544590(A)
申请公布日期
1957.08.06
申请号
CAD544590
申请日期
申请人
THE NATIONAL CASH REGISTER COMPANY
发明人
DAVID W. STEINHARDT
分类号
主分类号
代理机构
代理人
主权项
地址
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