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发明名称
Improvements in perforating devices for preventing alteration of cheques
摘要
申请公布号
GB624031(A)
申请公布日期
1949.05.26
申请号
GB19470002324
申请日期
1947.01.24
申请人
WILLIAM ALBERT WURSTER
发明人
分类号
B41K3/38
主分类号
B41K3/38
代理机构
代理人
主权项
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