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发明名称
Improvements in or relating to card indexes
摘要
申请公布号
GB1121396(A)
申请公布日期
1968.07.24
申请号
GB19660011254
申请日期
1966.03.15
申请人
WALTER KOLLER
发明人
分类号
B42F17/34;H01R9/24;H01T4/06;H04Q1/14
主分类号
B42F17/34
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