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发明名称
TALLYING DEVICES
摘要
A tally board with tally indicators manually movable along scales of graduations on its face for tallying variable values is specified.
申请公布号
US3677221(A)
申请公布日期
1972.07.18
申请号
USD3677221
申请日期
1970.03.09
申请人
WALTER W. GILES
发明人
WALTER W. GILES
分类号
G09B29/00;(IPC1-7):G09F9/00
主分类号
G09B29/00
代理机构
代理人
主权项
地址
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