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发明名称
Measuring opacity and detecting holes in sheet
摘要
申请公布号
GB2093179(A)
申请公布日期
1982.08.25
申请号
GB19810004872
申请日期
1981.02.17
申请人
DE LA RUE SYSTEMS LTD
发明人
分类号
G01N21/89;G07D7/12;G07D7/18;(IPC1-7):G01N21/88;G01N21/59
主分类号
G01N21/89
代理机构
代理人
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地址
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