Optical data card
US4812633A · kind A · utility
79Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1988 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Apr 8, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/24012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A wallet-sized data card includes a magneto-optic active region configured for rotational recording of data. A fender projecting outwardly from the card is disposed adjacent an outer circumference of the recording region for protecting the magneto-optic recording region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.