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经营范围
发明名称
A perpetual calendar
摘要
申请公布号
GB2202060(A)
申请公布日期
1988.09.14
申请号
GB19880005853
申请日期
1988.03.11
申请人
NICOLA * DENTAMARO
发明人
NICOLA * DENTAMARO
分类号
G09D3/08;(IPC1-7):G09D3/06
主分类号
G09D3/08
代理机构
代理人
主权项
地址
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