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发明名称
Electronic counting ring
摘要
申请公布号
US2515448(A)
申请公布日期
1950.07.18
申请号
US19480065428
申请日期
1948.12.15
申请人
THE NATIONAL CASH REGISTER COMPANY
发明人
GULDEN ERNEST V.
分类号
H03K23/82
主分类号
H03K23/82
代理机构
代理人
主权项
地址
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