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发明名称
An electric circuit for detecting a mark on a document
摘要
申请公布号
GB872812(A)
申请公布日期
1961.07.12
申请号
GB19580008293
申请日期
1958.03.14
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
B07C3/14
主分类号
B07C3/14
代理机构
代理人
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