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发明名称
ELECTRONIC PRINTING CALCULATOR
摘要
申请公布号
US3623009(A)
申请公布日期
1971.11.23
申请号
USD3623009
申请日期
1968.11.18
申请人
SINGER CO.:THE
发明人
ROBERT A. RAGEN
分类号
G06F15/02;(IPC1-7):G06F3/00
主分类号
G06F15/02
代理机构
代理人
主权项
地址
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