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发明名称
Record perforating device
摘要
申请公布号
US3169697(A)
申请公布日期
1965.02.16
申请号
US19630312409
申请日期
1963.09.30
申请人
SPERRY RAND CORPORATION
发明人
SCHMIDT LUDWIG M.
分类号
G06K
主分类号
G06K
代理机构
代理人
主权项
地址
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