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发明名称
ELECTRONIC DEVICE
摘要
申请公布号
CA457399(A)
申请公布日期
1949.06.14
申请号
CAD457399
申请日期
申请人
THE NATIONAL CASH REGISTER COMPANY
发明人
ROBERT E. MUMMA;FRANCIS X. BUCHER
分类号
主分类号
代理机构
代理人
主权项
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