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发明名称
Improvements relating to date calculators
摘要
申请公布号
GB784459(A)
申请公布日期
1957.10.09
申请号
GB19550026177
申请日期
1955.09.13
申请人
IAN MACKENZIE RAE;WILLIAM FALLAIZE HARRIS
发明人
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主分类号
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