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发明名称
Improvements in summary card punches
摘要
申请公布号
GB737983(A)
申请公布日期
1955.10.05
申请号
GB19530033049
申请日期
1953.11.27
申请人
MICHAEL MAUL
发明人
分类号
B66F7/28;B66F11/04
主分类号
B66F7/28
代理机构
代理人
主权项
地址
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