| 发明名称 |
Card selector device |
| 摘要 |
A film card selection device for use in an automatic microfilm display apparatus is provided with a switch for sensing that a film card has been selected. A counter counts the number of drive gear teeth passing a selected point after selection of a film card so that the apparatus can be stopped with the selected card in position for retrieval.
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| 申请公布号 |
US4223212(A) |
申请公布日期 |
1980.09.16 |
| 申请号 |
US19780894763 |
申请日期 |
1978.04.10 |
| 申请人 |
COMPUTER MICROFILM INTERNATIONAL CORPORATION |
发明人 |
SMITH, DAVID L.;JAMIESON, JOHN M. |
| 分类号 |
G06K17/00;H04N1/00;H04N1/047;H04N1/10;H04N1/387;H04N1/40;H04N7/18;(IPC1-7):G06F7/38 |
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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