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发明名称
Improvements in and relating to calendars and other like indicators
摘要
申请公布号
GB507469(A)
申请公布日期
1939.06.16
申请号
GB19370002772
申请日期
1938.01.29
申请人
LAURANCE GEORGE BENNET;WALTER SINCLAIR BENNET
发明人
分类号
B42D5/04
主分类号
B42D5/04
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