| 发明名称 |
CARD RETRIEVAL DEVICE |
| 摘要 |
<p>A film card retrieval device for use in an automatic microfilm display apparatus is provided with a switch for sensing that a film card has been retrieved. In the event the device fails to retrieve a film card, the absence of a switch output signal causes the control apparatus to repeat the card retrieval routine.</p> |
| 申请公布号 |
CA1110982(A) |
申请公布日期 |
1981.10.20 |
| 申请号 |
CA19790323629 |
申请日期 |
1979.03.15 |
| 申请人 |
COMPUTER MICROFILM INTERNATIONAL CORPORATION |
发明人 |
SMITH, DAVID L.;JAMEISON, JOHN M. |
| 分类号 |
G06K17/00;H04N1/00;H04N1/047;H04N1/10;H04N1/387;H04N1/40;H04N7/18;(IPC1-7):03B21/00 |
主分类号 |
G06K17/00 |
| 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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