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发明名称
CHECK DIGIT VERIFIER
摘要
申请公布号
US3508707(A)
申请公布日期
1970.04.28
申请号
USD3508707
申请日期
1968.01.15
申请人
INTERN. BUSINESS MACHINES CORP.
发明人
WILBUR M. DAVIS
分类号
G06C7/02;(IPC1-7):G06C7/04
主分类号
G06C7/02
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