| 发明名称 |
Progressive cancellation system for magnetically encoded credit cards |
| 摘要 |
Progressive cancellation system for magnetically encoded credit cards has machine readable control strip and second magnetic strip indicating remaining credit with punch holes indicating thus to user
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| 申请公布号 |
CH599634(A5) |
申请公布日期 |
1978.05.31 |
| 申请号 |
CH19760001288 |
申请日期 |
1976.02.02 |
| 申请人 |
ELECTRONICS FINANCIAL LTD. |
发明人 |
PATRICK E. RYAN |
| 分类号 |
G06K19/06;G07B11/11;G07F7/02;(IPC1-7):G06K17/00;G11B5/00 |
主分类号 |
G06K19/06 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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