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发明名称
MECHANICAL CALCULATOR
摘要
申请公布号
GB1473842(A)
申请公布日期
1977.05.18
申请号
GB19730023071
申请日期
1973.05.15
申请人
DIBLEY H
发明人
分类号
G06G1/00;(IPC1-7):G06G1/10
主分类号
G06G1/00
代理机构
代理人
主权项
地址
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