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发明名称
EDGE PUNCHCARD
摘要
申请公布号
US3560719(A)
申请公布日期
1971.02.02
申请号
USD3560719
申请日期
1968.02.05
申请人
BUSINESS EFFICIENCY AIDS INC.
发明人
ERNEST A. DAHL JR.
分类号
G06K19/02;(IPC1-7):G06K19/02;B65H3/16
主分类号
G06K19/02
代理机构
代理人
主权项
地址
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