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经营范围
发明名称
Improvements in or relating to calculating devices
摘要
申请公布号
GB328455(A)
申请公布日期
1930.05.01
申请号
GB19290014281
申请日期
1929.05.07
申请人
HARALD ODEGAARDEN
发明人
分类号
G06G1/04
主分类号
G06G1/04
代理机构
代理人
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